Home / 91,425.71-137,151.68-28,251.35

Finding the Fourth Proportional to 91,425.71, 137,151.68 and 28,251.35

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Solution

The fourth proportional to 91,425.71, 137,151.68 and 28,251.35 is: 42,381.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,425.71 : 137,151.68 = 28,251.35 : x
  2. Step 2: Convert to fraction form
    91,425.71/137,151.68 = 28,251.35/x
  3. Step 3: Cross multiply
    91,425.71x = 137,151.68 × 28,251.35
  4. Step 4: Simplify right side
    91,425.71x = 3,874,719,802.07
  5. Step 5: Solve for x
    x = 3,874,719,802.07/91,425.71
  6. Step 6: Final answer
    x = 42,381.07

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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.