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Finding the Fourth Proportional to 66,159.68, 99,250.55 and 30,656.57

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Solution

The fourth proportional to 66,159.68, 99,250.55 and 30,656.57 is: 45,989.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,159.68 : 99,250.55 = 30,656.57 : x
  2. Step 2: Convert to fraction form
    66,159.68/99,250.55 = 30,656.57/x
  3. Step 3: Cross multiply
    66,159.68x = 99,250.55 × 30,656.57
  4. Step 4: Simplify right side
    66,159.68x = 3,042,680,784.08
  5. Step 5: Solve for x
    x = 3,042,680,784.08/66,159.68
  6. Step 6: Final answer
    x = 45,989.96

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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.