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Finding the Fourth Proportional to 61,663.92, 92,418 and 51,399.60

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Solution

The fourth proportional to 61,663.92, 92,418 and 51,399.60 is: 77,034.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,663.92 : 92,418 = 51,399.60 : x
  2. Step 2: Convert to fraction form
    61,663.92/92,418 = 51,399.60/x
  3. Step 3: Cross multiply
    61,663.92x = 92,418 × 51,399.60
  4. Step 4: Simplify right side
    61,663.92x = 4,750,248,232.80
  5. Step 5: Solve for x
    x = 4,750,248,232.80/61,663.92
  6. Step 6: Final answer
    x = 77,034.48

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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.