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Finding the Fourth Proportional to 92,407.60, 138,514.20 and 52,879.60

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Solution

The fourth proportional to 92,407.60, 138,514.20 and 52,879.60 is: 79,263.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,407.60 : 138,514.20 = 52,879.60 : x
  2. Step 2: Convert to fraction form
    92,407.60/138,514.20 = 52,879.60/x
  3. Step 3: Cross multiply
    92,407.60x = 138,514.20 × 52,879.60
  4. Step 4: Simplify right side
    92,407.60x = 7,324,575,490.32
  5. Step 5: Solve for x
    x = 7,324,575,490.32/92,407.60
  6. Step 6: Final answer
    x = 79,263.78

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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.