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Finding the Fourth Proportional to 66,524, 99,832.88 and 60,171.72

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Solution

The fourth proportional to 66,524, 99,832.88 and 60,171.72 is: 90,299.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,524 : 99,832.88 = 60,171.72 : x
  2. Step 2: Convert to fraction form
    66,524/99,832.88 = 60,171.72/x
  3. Step 3: Cross multiply
    66,524x = 99,832.88 × 60,171.72
  4. Step 4: Simplify right side
    66,524x = 6,007,116,102.15
  5. Step 5: Solve for x
    x = 6,007,116,102.15/66,524
  6. Step 6: Final answer
    x = 90,299.98

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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.