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Finding the Fourth Proportional to 92,557.78, 138,819.04 and 45,125.26

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Solution

The fourth proportional to 92,557.78, 138,819.04 and 45,125.26 is: 67,679.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,557.78 : 138,819.04 = 45,125.26 : x
  2. Step 2: Convert to fraction form
    92,557.78/138,819.04 = 45,125.26/x
  3. Step 3: Cross multiply
    92,557.78x = 138,819.04 × 45,125.26
  4. Step 4: Simplify right side
    92,557.78x = 6,264,245,272.95
  5. Step 5: Solve for x
    x = 6,264,245,272.95/92,557.78
  6. Step 6: Final answer
    x = 67,679.29

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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.