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Finding the Fourth Proportional to 91,613.80, 137,417.11 and 38,292.01

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Solution

The fourth proportional to 91,613.80, 137,417.11 and 38,292.01 is: 57,436.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,613.80 : 137,417.11 = 38,292.01 : x
  2. Step 2: Convert to fraction form
    91,613.80/137,417.11 = 38,292.01/x
  3. Step 3: Cross multiply
    91,613.80x = 137,417.11 × 38,292.01
  4. Step 4: Simplify right side
    91,613.80x = 5,261,976,471.75
  5. Step 5: Solve for x
    x = 5,261,976,471.75/91,613.80
  6. Step 6: Final answer
    x = 57,436.50

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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.