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Finding the Fourth Proportional to 72,452.10, 108,697.05 and 28,080.30

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Solution

The fourth proportional to 72,452.10, 108,697.05 and 28,080.30 is: 42,127.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,452.10 : 108,697.05 = 28,080.30 : x
  2. Step 2: Convert to fraction form
    72,452.10/108,697.05 = 28,080.30/x
  3. Step 3: Cross multiply
    72,452.10x = 108,697.05 × 28,080.30
  4. Step 4: Simplify right side
    72,452.10x = 3,052,245,773.12
  5. Step 5: Solve for x
    x = 3,052,245,773.12/72,452.10
  6. Step 6: Final answer
    x = 42,127.78

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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.