Home / 84,039.32-126,020.10-31,447.64

Finding the Fourth Proportional to 84,039.32, 126,020.10 and 31,447.64

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Solution

The fourth proportional to 84,039.32, 126,020.10 and 31,447.64 is: 47,156.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,039.32 : 126,020.10 = 31,447.64 : x
  2. Step 2: Convert to fraction form
    84,039.32/126,020.10 = 31,447.64/x
  3. Step 3: Cross multiply
    84,039.32x = 126,020.10 × 31,447.64
  4. Step 4: Simplify right side
    84,039.32x = 3,963,034,737.56
  5. Step 5: Solve for x
    x = 3,963,034,737.56/84,039.32
  6. Step 6: Final answer
    x = 47,156.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.