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Finding the Fourth Proportional to 52,873.80, 79,310.70 and 45,000.60

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Solution

The fourth proportional to 52,873.80, 79,310.70 and 45,000.60 is: 67,500.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,873.80 : 79,310.70 = 45,000.60 : x
  2. Step 2: Convert to fraction form
    52,873.80/79,310.70 = 45,000.60/x
  3. Step 3: Cross multiply
    52,873.80x = 79,310.70 × 45,000.60
  4. Step 4: Simplify right side
    52,873.80x = 3,569,029,086.42
  5. Step 5: Solve for x
    x = 3,569,029,086.42/52,873.80
  6. Step 6: Final answer
    x = 67,500.90

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Similar ratio
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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.