Home / 79,542.41-109,666.66-65,149.21

Finding the Fourth Proportional to 79,542.41, 109,666.66 and 65,149.21

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Solution

The fourth proportional to 79,542.41, 109,666.66 and 65,149.21 is: 89,822.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,542.41 : 109,666.66 = 65,149.21 : x
  2. Step 2: Convert to fraction form
    79,542.41/109,666.66 = 65,149.21/x
  3. Step 3: Cross multiply
    79,542.41x = 109,666.66 × 65,149.21
  4. Step 4: Simplify right side
    79,542.41x = 7,144,696,358.70
  5. Step 5: Solve for x
    x = 7,144,696,358.70/79,542.41
  6. Step 6: Final answer
    x = 89,822.48

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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.