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Finding the Fourth Proportional to 66,489.66, 99,746.64 and 40,163.04

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Solution

The fourth proportional to 66,489.66, 99,746.64 and 40,163.04 is: 60,251.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,489.66 : 99,746.64 = 40,163.04 : x
  2. Step 2: Convert to fraction form
    66,489.66/99,746.64 = 40,163.04/x
  3. Step 3: Cross multiply
    66,489.66x = 99,746.64 × 40,163.04
  4. Step 4: Simplify right side
    66,489.66x = 4,006,128,292.19
  5. Step 5: Solve for x
    x = 4,006,128,292.19/66,489.66
  6. Step 6: Final answer
    x = 60,251.90

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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.