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Finding the Fourth Proportional to 65,604.33, 90,314.87 and 62,591.47

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Solution

The fourth proportional to 65,604.33, 90,314.87 and 62,591.47 is: 86,167.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,604.33 : 90,314.87 = 62,591.47 : x
  2. Step 2: Convert to fraction form
    65,604.33/90,314.87 = 62,591.47/x
  3. Step 3: Cross multiply
    65,604.33x = 90,314.87 × 62,591.47
  4. Step 4: Simplify right side
    65,604.33x = 5,652,939,937.41
  5. Step 5: Solve for x
    x = 5,652,939,937.41/65,604.33
  6. Step 6: Final answer
    x = 86,167.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.