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Finding the Fourth Proportional to 66,487.60, 99,735.90 and 27,045.40

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Solution

The fourth proportional to 66,487.60, 99,735.90 and 27,045.40 is: 40,569.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,487.60 : 99,735.90 = 27,045.40 : x
  2. Step 2: Convert to fraction form
    66,487.60/99,735.90 = 27,045.40/x
  3. Step 3: Cross multiply
    66,487.60x = 99,735.90 × 27,045.40
  4. Step 4: Simplify right side
    66,487.60x = 2,697,397,309.86
  5. Step 5: Solve for x
    x = 2,697,397,309.86/66,487.60
  6. Step 6: Final answer
    x = 40,569.93

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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.