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Finding the Fourth Proportional to 72,841.60, 109,288.56 and 28,500.24

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Solution

The fourth proportional to 72,841.60, 109,288.56 and 28,500.24 is: 42,760.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,841.60 : 109,288.56 = 28,500.24 : x
  2. Step 2: Convert to fraction form
    72,841.60/109,288.56 = 28,500.24/x
  3. Step 3: Cross multiply
    72,841.60x = 109,288.56 × 28,500.24
  4. Step 4: Simplify right side
    72,841.60x = 3,114,750,189.25
  5. Step 5: Solve for x
    x = 3,114,750,189.25/72,841.60
  6. Step 6: Final answer
    x = 42,760.60

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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.