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Finding the Fourth Proportional to 66,600.56, 99,950.15 and 31,540.32

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Solution

The fourth proportional to 66,600.56, 99,950.15 and 31,540.32 is: 47,333.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,600.56 : 99,950.15 = 31,540.32 : x
  2. Step 2: Convert to fraction form
    66,600.56/99,950.15 = 31,540.32/x
  3. Step 3: Cross multiply
    66,600.56x = 99,950.15 × 31,540.32
  4. Step 4: Simplify right side
    66,600.56x = 3,152,459,793.90
  5. Step 5: Solve for x
    x = 3,152,459,793.90/66,600.56
  6. Step 6: Final answer
    x = 47,333.83

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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.