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Finding the Fourth Proportional to 78,598.67, 117,819.15 and 36,508.29

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Solution

The fourth proportional to 78,598.67, 117,819.15 and 36,508.29 is: 54,725.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,598.67 : 117,819.15 = 36,508.29 : x
  2. Step 2: Convert to fraction form
    78,598.67/117,819.15 = 36,508.29/x
  3. Step 3: Cross multiply
    78,598.67x = 117,819.15 × 36,508.29
  4. Step 4: Simplify right side
    78,598.67x = 4,301,375,695.75
  5. Step 5: Solve for x
    x = 4,301,375,695.75/78,598.67
  6. Step 6: Final answer
    x = 54,725.81

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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.