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Finding the Fourth Proportional to 61,350.10, 91,915.80 and 37,949.20

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Solution

The fourth proportional to 61,350.10, 91,915.80 and 37,949.20 is: 56,856.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,350.10 : 91,915.80 = 37,949.20 : x
  2. Step 2: Convert to fraction form
    61,350.10/91,915.80 = 37,949.20/x
  3. Step 3: Cross multiply
    61,350.10x = 91,915.80 × 37,949.20
  4. Step 4: Simplify right side
    61,350.10x = 3,488,131,077.36
  5. Step 5: Solve for x
    x = 3,488,131,077.36/61,350.10
  6. Step 6: Final answer
    x = 56,856.16

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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.