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Finding the Fourth Proportional to 63,098.76, 86,899.11 and 61,720.95

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Solution

The fourth proportional to 63,098.76, 86,899.11 and 61,720.95 is: 85,001.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,098.76 : 86,899.11 = 61,720.95 : x
  2. Step 2: Convert to fraction form
    63,098.76/86,899.11 = 61,720.95/x
  3. Step 3: Cross multiply
    63,098.76x = 86,899.11 × 61,720.95
  4. Step 4: Simplify right side
    63,098.76x = 5,363,495,623.35
  5. Step 5: Solve for x
    x = 5,363,495,623.35/63,098.76
  6. Step 6: Final answer
    x = 85,001.60

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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.