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Finding the Fourth Proportional to 91,446.90, 137,279.70 and 51,497.70

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Solution

The fourth proportional to 91,446.90, 137,279.70 and 51,497.70 is: 77,308.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,446.90 : 137,279.70 = 51,497.70 : x
  2. Step 2: Convert to fraction form
    91,446.90/137,279.70 = 51,497.70/x
  3. Step 3: Cross multiply
    91,446.90x = 137,279.70 × 51,497.70
  4. Step 4: Simplify right side
    91,446.90x = 7,069,588,806.69
  5. Step 5: Solve for x
    x = 7,069,588,806.69/91,446.90
  6. Step 6: Final answer
    x = 77,308.13

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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.