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Finding the Fourth Proportional to 67,270.60, 100,905.90 and 45,152.20

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Solution

The fourth proportional to 67,270.60, 100,905.90 and 45,152.20 is: 67,728.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,270.60 : 100,905.90 = 45,152.20 : x
  2. Step 2: Convert to fraction form
    67,270.60/100,905.90 = 45,152.20/x
  3. Step 3: Cross multiply
    67,270.60x = 100,905.90 × 45,152.20
  4. Step 4: Simplify right side
    67,270.60x = 4,556,123,377.98
  5. Step 5: Solve for x
    x = 4,556,123,377.98/67,270.60
  6. Step 6: Final answer
    x = 67,728.30

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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.