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Finding the Fourth Proportional to 70,414.91, 97,171.91 and 38,148.78

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Solution

The fourth proportional to 70,414.91, 97,171.91 and 38,148.78 is: 52,644.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,414.91 : 97,171.91 = 38,148.78 : x
  2. Step 2: Convert to fraction form
    70,414.91/97,171.91 = 38,148.78/x
  3. Step 3: Cross multiply
    70,414.91x = 97,171.91 × 38,148.78
  4. Step 4: Simplify right side
    70,414.91x = 3,706,989,626.03
  5. Step 5: Solve for x
    x = 3,706,989,626.03/70,414.91
  6. Step 6: Final answer
    x = 52,644.96

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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.