Home / 72,123.97-99,531.14-40,293.61

Finding the Fourth Proportional to 72,123.97, 99,531.14 and 40,293.61

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Solution

The fourth proportional to 72,123.97, 99,531.14 and 40,293.61 is: 55,605.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,123.97 : 99,531.14 = 40,293.61 : x
  2. Step 2: Convert to fraction form
    72,123.97/99,531.14 = 40,293.61/x
  3. Step 3: Cross multiply
    72,123.97x = 99,531.14 × 40,293.61
  4. Step 4: Simplify right side
    72,123.97x = 4,010,468,938.02
  5. Step 5: Solve for x
    x = 4,010,468,938.02/72,123.97
  6. Step 6: Final answer
    x = 55,605.22

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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.