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Finding the Fourth Proportional to 29,439.70, 40,543.79 and 29,347.43

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Solution

The fourth proportional to 29,439.70, 40,543.79 and 29,347.43 is: 40,416.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,439.70 : 40,543.79 = 29,347.43 : x
  2. Step 2: Convert to fraction form
    29,439.70/40,543.79 = 29,347.43/x
  3. Step 3: Cross multiply
    29,439.70x = 40,543.79 × 29,347.43
  4. Step 4: Simplify right side
    29,439.70x = 1,189,856,082.64
  5. Step 5: Solve for x
    x = 1,189,856,082.64/29,439.70
  6. Step 6: Final answer
    x = 40,416.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.