Home / 31,315,086,072.52-43,223,925,039.36-20,465,789,385.31

Finding the Fourth Proportional to 31,315,086,072.52, 43,223,925,039.36 and 20,465,789,385.31

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Solution

The fourth proportional to 31,315,086,072.52, 43,223,925,039.36 and 20,465,789,385.31 is: 28,248,740,693.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,315,086,072.52 : 43,223,925,039.36 = 20,465,789,385.31 : x
  2. Step 2: Convert to fraction form
    31,315,086,072.52/43,223,925,039.36 = 20,465,789,385.31/x
  3. Step 3: Cross multiply
    31,315,086,072.52x = 43,223,925,039.36 × 20,465,789,385.31
  4. Step 4: Simplify right side
    31,315,086,072.52x = 884,611,746,261,737,013,248
  5. Step 5: Solve for x
    x = 884,611,746,261,737,013,248/31,315,086,072.52
  6. Step 6: Final answer
    x = 28,248,740,693.65

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.