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Finding the Fourth Proportional to 45,649.80, 68,474.70 and 38,432.70

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Solution

The fourth proportional to 45,649.80, 68,474.70 and 38,432.70 is: 57,649.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,649.80 : 68,474.70 = 38,432.70 : x
  2. Step 2: Convert to fraction form
    45,649.80/68,474.70 = 38,432.70/x
  3. Step 3: Cross multiply
    45,649.80x = 68,474.70 × 38,432.70
  4. Step 4: Simplify right side
    45,649.80x = 2,631,667,602.69
  5. Step 5: Solve for x
    x = 2,631,667,602.69/45,649.80
  6. Step 6: Final answer
    x = 57,649.05

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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.