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Finding the Fourth Proportional to 66,474.68, 99,735.86 and 28,508.05

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Solution

The fourth proportional to 66,474.68, 99,735.86 and 28,508.05 is: 42,772.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,474.68 : 99,735.86 = 28,508.05 : x
  2. Step 2: Convert to fraction form
    66,474.68/99,735.86 = 28,508.05/x
  3. Step 3: Cross multiply
    66,474.68x = 99,735.86 × 28,508.05
  4. Step 4: Simplify right side
    66,474.68x = 2,843,274,919.26
  5. Step 5: Solve for x
    x = 2,843,274,919.26/66,474.68
  6. Step 6: Final answer
    x = 42,772.30

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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.