Home / 91,815.25-137,781.14-39,225.13

Finding the Fourth Proportional to 91,815.25, 137,781.14 and 39,225.13

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Solution

The fourth proportional to 91,815.25, 137,781.14 and 39,225.13 is: 58,862.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,815.25 : 137,781.14 = 39,225.13 : x
  2. Step 2: Convert to fraction form
    91,815.25/137,781.14 = 39,225.13/x
  3. Step 3: Cross multiply
    91,815.25x = 137,781.14 × 39,225.13
  4. Step 4: Simplify right side
    91,815.25x = 5,404,482,931.92
  5. Step 5: Solve for x
    x = 5,404,482,931.92/91,815.25
  6. Step 6: Final answer
    x = 58,862.58

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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.