Home / 87,840,642.31-121,220,083.98-48,688,301.28

Finding the Fourth Proportional to 87,840,642.31, 121,220,083.98 and 48,688,301.28

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Solution

The fourth proportional to 87,840,642.31, 121,220,083.98 and 48,688,301.28 is: 67,189,854.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,840,642.31 : 121,220,083.98 = 48,688,301.28 : x
  2. Step 2: Convert to fraction form
    87,840,642.31/121,220,083.98 = 48,688,301.28/x
  3. Step 3: Cross multiply
    87,840,642.31x = 121,220,083.98 × 48,688,301.28
  4. Step 4: Simplify right side
    87,840,642.31x = 5,901,999,970,005,142
  5. Step 5: Solve for x
    x = 5,901,999,970,005,142/87,840,642.31
  6. Step 6: Final answer
    x = 67,189,854.43

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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.