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Finding the Fourth Proportional to 66,473.28, 99,709.92 and 52,632

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Solution

The fourth proportional to 66,473.28, 99,709.92 and 52,632 is: 78,948

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,473.28 : 99,709.92 = 52,632 : x
  2. Step 2: Convert to fraction form
    66,473.28/99,709.92 = 52,632/x
  3. Step 3: Cross multiply
    66,473.28x = 99,709.92 × 52,632
  4. Step 4: Simplify right side
    66,473.28x = 5,247,932,509.44
  5. Step 5: Solve for x
    x = 5,247,932,509.44/66,473.28
  6. Step 6: Final answer
    x = 78,948

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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.