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Finding the Fourth Proportional to 91,404.80, 137,150.40 and 38,859.20

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Solution

The fourth proportional to 91,404.80, 137,150.40 and 38,859.20 is: 58,307.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,404.80 : 137,150.40 = 38,859.20 : x
  2. Step 2: Convert to fraction form
    91,404.80/137,150.40 = 38,859.20/x
  3. Step 3: Cross multiply
    91,404.80x = 137,150.40 × 38,859.20
  4. Step 4: Simplify right side
    91,404.80x = 5,329,554,823.68
  5. Step 5: Solve for x
    x = 5,329,554,823.68/91,404.80
  6. Step 6: Final answer
    x = 58,307.17

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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.