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Finding the Fourth Proportional to 66,474.28, 99,711.42 and 52,633

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Solution

The fourth proportional to 66,474.28, 99,711.42 and 52,633 is: 78,949.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,474.28 : 99,711.42 = 52,633 : x
  2. Step 2: Convert to fraction form
    66,474.28/99,711.42 = 52,633/x
  3. Step 3: Cross multiply
    66,474.28x = 99,711.42 × 52,633
  4. Step 4: Simplify right side
    66,474.28x = 5,248,111,168.86
  5. Step 5: Solve for x
    x = 5,248,111,168.86/66,474.28
  6. Step 6: Final answer
    x = 78,949.50

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1.5x scale

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.