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Finding the Fourth Proportional to 79,157.76, 109,248.10 and 45,158.42

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Solution

The fourth proportional to 79,157.76, 109,248.10 and 45,158.42 is: 62,324.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,157.76 : 109,248.10 = 45,158.42 : x
  2. Step 2: Convert to fraction form
    79,157.76/109,248.10 = 45,158.42/x
  3. Step 3: Cross multiply
    79,157.76x = 109,248.10 × 45,158.42
  4. Step 4: Simplify right side
    79,157.76x = 4,933,471,584.00
  5. Step 5: Solve for x
    x = 4,933,471,584.00/79,157.76
  6. Step 6: Final answer
    x = 62,324.55

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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.