Home / 85,187,789.80-127,781,684.70-31,328,103.40

Finding the Fourth Proportional to 85,187,789.80, 127,781,684.70 and 31,328,103.40

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Solution

The fourth proportional to 85,187,789.80, 127,781,684.70 and 31,328,103.40 is: 46,992,155.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,187,789.80 : 127,781,684.70 = 31,328,103.40 : x
  2. Step 2: Convert to fraction form
    85,187,789.80/127,781,684.70 = 31,328,103.40/x
  3. Step 3: Cross multiply
    85,187,789.80x = 127,781,684.70 × 31,328,103.40
  4. Step 4: Simplify right side
    85,187,789.80x = 4,003,157,830,907,798
  5. Step 5: Solve for x
    x = 4,003,157,830,907,798/85,187,789.80
  6. Step 6: Final answer
    x = 46,992,155.10

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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.