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Finding the Fourth Proportional to 79,331.68, 109,472.16 and 43,520.86

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Solution

The fourth proportional to 79,331.68, 109,472.16 and 43,520.86 is: 60,055.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,331.68 : 109,472.16 = 43,520.86 : x
  2. Step 2: Convert to fraction form
    79,331.68/109,472.16 = 43,520.86/x
  3. Step 3: Cross multiply
    79,331.68x = 109,472.16 × 43,520.86
  4. Step 4: Simplify right side
    79,331.68x = 4,764,322,549.26
  5. Step 5: Solve for x
    x = 4,764,322,549.26/79,331.68
  6. Step 6: Final answer
    x = 60,055.74

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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.