Home / 83,633.18-115,414.13-45,392.78

Finding the Fourth Proportional to 83,633.18, 115,414.13 and 45,392.78

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Solution

The fourth proportional to 83,633.18, 115,414.13 and 45,392.78 is: 62,642.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,633.18 : 115,414.13 = 45,392.78 : x
  2. Step 2: Convert to fraction form
    83,633.18/115,414.13 = 45,392.78/x
  3. Step 3: Cross multiply
    83,633.18x = 115,414.13 × 45,392.78
  4. Step 4: Simplify right side
    83,633.18x = 5,238,967,407.95
  5. Step 5: Solve for x
    x = 5,238,967,407.95/83,633.18
  6. Step 6: Final answer
    x = 62,642.22

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1.5x scale

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.