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Finding the Fourth Proportional to 92,861.80, 127,974.18 and 91,479.40

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Solution

The fourth proportional to 92,861.80, 127,974.18 and 91,479.40 is: 126,069.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,861.80 : 127,974.18 = 91,479.40 : x
  2. Step 2: Convert to fraction form
    92,861.80/127,974.18 = 91,479.40/x
  3. Step 3: Cross multiply
    92,861.80x = 127,974.18 × 91,479.40
  4. Step 4: Simplify right side
    92,861.80x = 11,707,001,201.89
  5. Step 5: Solve for x
    x = 11,707,001,201.89/92,861.80
  6. Step 6: Final answer
    x = 126,069.07

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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.