Home / 61,658.19-85,067.49-40,138.11

Finding the Fourth Proportional to 61,658.19, 85,067.49 and 40,138.11

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Solution

The fourth proportional to 61,658.19, 85,067.49 and 40,138.11 is: 55,377.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,658.19 : 85,067.49 = 40,138.11 : x
  2. Step 2: Convert to fraction form
    61,658.19/85,067.49 = 40,138.11/x
  3. Step 3: Cross multiply
    61,658.19x = 85,067.49 × 40,138.11
  4. Step 4: Simplify right side
    61,658.19x = 3,414,448,271.04
  5. Step 5: Solve for x
    x = 3,414,448,271.04/61,658.19
  6. Step 6: Final answer
    x = 55,377.04

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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.