Home / 72,839.20-109,254.30-30,701.20

Finding the Fourth Proportional to 72,839.20, 109,254.30 and 30,701.20

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Solution

The fourth proportional to 72,839.20, 109,254.30 and 30,701.20 is: 46,049.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,839.20 : 109,254.30 = 30,701.20 : x
  2. Step 2: Convert to fraction form
    72,839.20/109,254.30 = 30,701.20/x
  3. Step 3: Cross multiply
    72,839.20x = 109,254.30 × 30,701.20
  4. Step 4: Simplify right side
    72,839.20x = 3,354,238,115.16
  5. Step 5: Solve for x
    x = 3,354,238,115.16/72,839.20
  6. Step 6: Final answer
    x = 46,049.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.