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Finding the Fourth Proportional to 79,147.60, 109,226.12 and 43,340.92

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Solution

The fourth proportional to 79,147.60, 109,226.12 and 43,340.92 is: 59,811.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,147.60 : 109,226.12 = 43,340.92 : x
  2. Step 2: Convert to fraction form
    79,147.60/109,226.12 = 43,340.92/x
  3. Step 3: Cross multiply
    79,147.60x = 109,226.12 × 43,340.92
  4. Step 4: Simplify right side
    79,147.60x = 4,733,960,528.83
  5. Step 5: Solve for x
    x = 4,733,960,528.83/79,147.60
  6. Step 6: Final answer
    x = 59,811.80

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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.