Home / 71,939.26-99,279.03-40,113.82

Finding the Fourth Proportional to 71,939.26, 99,279.03 and 40,113.82

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Solution

The fourth proportional to 71,939.26, 99,279.03 and 40,113.82 is: 55,358.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,939.26 : 99,279.03 = 40,113.82 : x
  2. Step 2: Convert to fraction form
    71,939.26/99,279.03 = 40,113.82/x
  3. Step 3: Cross multiply
    71,939.26x = 99,279.03 × 40,113.82
  4. Step 4: Simplify right side
    71,939.26x = 3,982,461,139.19
  5. Step 5: Solve for x
    x = 3,982,461,139.19/71,939.26
  6. Step 6: Final answer
    x = 55,358.66

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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.