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Finding the Fourth Proportional to 79,118.92, 109,186.68 and 43,311.52

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Solution

The fourth proportional to 79,118.92, 109,186.68 and 43,311.52 is: 59,771.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,118.92 : 109,186.68 = 43,311.52 : x
  2. Step 2: Convert to fraction form
    79,118.92/109,186.68 = 43,311.52/x
  3. Step 3: Cross multiply
    79,118.92x = 109,186.68 × 43,311.52
  4. Step 4: Simplify right side
    79,118.92x = 4,729,041,074.55
  5. Step 5: Solve for x
    x = 4,729,041,074.55/79,118.92
  6. Step 6: Final answer
    x = 59,771.30

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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.