Home / 79,127.30-109,197.59-43,317.20

Finding the Fourth Proportional to 79,127.30, 109,197.59 and 43,317.20

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Solution

The fourth proportional to 79,127.30, 109,197.59 and 43,317.20 is: 59,778.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,127.30 : 109,197.59 = 43,317.20 : x
  2. Step 2: Convert to fraction form
    79,127.30/109,197.59 = 43,317.20/x
  3. Step 3: Cross multiply
    79,127.30x = 109,197.59 × 43,317.20
  4. Step 4: Simplify right side
    79,127.30x = 4,730,133,082.97
  5. Step 5: Solve for x
    x = 4,730,133,082.97/79,127.30
  6. Step 6: Final answer
    x = 59,778.78

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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.