Home / 91,910.40-137,866.56-39,287.04

Finding the Fourth Proportional to 91,910.40, 137,866.56 and 39,287.04

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Solution

The fourth proportional to 91,910.40, 137,866.56 and 39,287.04 is: 58,930.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,910.40 : 137,866.56 = 39,287.04 : x
  2. Step 2: Convert to fraction form
    91,910.40/137,866.56 = 39,287.04/x
  3. Step 3: Cross multiply
    91,910.40x = 137,866.56 × 39,287.04
  4. Step 4: Simplify right side
    91,910.40x = 5,416,369,057.38
  5. Step 5: Solve for x
    x = 5,416,369,057.38/91,910.40
  6. Step 6: Final answer
    x = 58,930.97

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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.