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Finding the Fourth Proportional to 66,162.40, 99,146.70 and 32,815.87

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Solution

The fourth proportional to 66,162.40, 99,146.70 and 32,815.87 is: 49,175.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,162.40 : 99,146.70 = 32,815.87 : x
  2. Step 2: Convert to fraction form
    66,162.40/99,146.70 = 32,815.87/x
  3. Step 3: Cross multiply
    66,162.40x = 99,146.70 × 32,815.87
  4. Step 4: Simplify right side
    66,162.40x = 3,253,584,970.26
  5. Step 5: Solve for x
    x = 3,253,584,970.26/66,162.40
  6. Step 6: Final answer
    x = 49,175.74

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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.