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Finding the Fourth Proportional to 79,539.92, 109,765.84 and 43,730.18

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Solution

The fourth proportional to 79,539.92, 109,765.84 and 43,730.18 is: 60,348.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,539.92 : 109,765.84 = 43,730.18 : x
  2. Step 2: Convert to fraction form
    79,539.92/109,765.84 = 43,730.18/x
  3. Step 3: Cross multiply
    79,539.92x = 109,765.84 × 43,730.18
  4. Step 4: Simplify right side
    79,539.92x = 4,800,079,941.05
  5. Step 5: Solve for x
    x = 4,800,079,941.05/79,539.92
  6. Step 6: Final answer
    x = 60,348.06

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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.