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Finding the Fourth Proportional to 79,154.92, 109,223.58 and 45,161.38

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Solution

The fourth proportional to 79,154.92, 109,223.58 and 45,161.38 is: 62,316.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,154.92 : 109,223.58 = 45,161.38 : x
  2. Step 2: Convert to fraction form
    79,154.92/109,223.58 = 45,161.38/x
  3. Step 3: Cross multiply
    79,154.92x = 109,223.58 × 45,161.38
  4. Step 4: Simplify right side
    79,154.92x = 4,932,687,601.34
  5. Step 5: Solve for x
    x = 4,932,687,601.34/79,154.92
  6. Step 6: Final answer
    x = 62,316.88

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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.