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Finding the Fourth Proportional to 92,613.80, 138,525.06 and 77,323.40

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Solution

The fourth proportional to 92,613.80, 138,525.06 and 77,323.40 is: 115,654.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,613.80 : 138,525.06 = 77,323.40 : x
  2. Step 2: Convert to fraction form
    92,613.80/138,525.06 = 77,323.40/x
  3. Step 3: Cross multiply
    92,613.80x = 138,525.06 × 77,323.40
  4. Step 4: Simplify right side
    92,613.80x = 10,711,228,624.40
  5. Step 5: Solve for x
    x = 10,711,228,624.40/92,613.80
  6. Step 6: Final answer
    x = 115,654.78

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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.