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Finding the Fourth Proportional to 70,245.72, 96,939.03 and 38,414.61

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Solution

The fourth proportional to 70,245.72, 96,939.03 and 38,414.61 is: 53,012.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,245.72 : 96,939.03 = 38,414.61 : x
  2. Step 2: Convert to fraction form
    70,245.72/96,939.03 = 38,414.61/x
  3. Step 3: Cross multiply
    70,245.72x = 96,939.03 × 38,414.61
  4. Step 4: Simplify right side
    70,245.72x = 3,723,875,031.23
  5. Step 5: Solve for x
    x = 3,723,875,031.23/70,245.72
  6. Step 6: Final answer
    x = 53,012.13

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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.