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Finding the Fourth Proportional to 66,538.55, 99,819.35 and 27,117.11

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Solution

The fourth proportional to 66,538.55, 99,819.35 and 27,117.11 is: 40,680.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,538.55 : 99,819.35 = 27,117.11 : x
  2. Step 2: Convert to fraction form
    66,538.55/99,819.35 = 27,117.11/x
  3. Step 3: Cross multiply
    66,538.55x = 99,819.35 × 27,117.11
  4. Step 4: Simplify right side
    66,538.55x = 2,706,812,294.08
  5. Step 5: Solve for x
    x = 2,706,812,294.08/66,538.55
  6. Step 6: Final answer
    x = 40,680.36

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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.