Home / 83,729.14-125,642.67-31,175.86

Finding the Fourth Proportional to 83,729.14, 125,642.67 and 31,175.86

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Solution

The fourth proportional to 83,729.14, 125,642.67 and 31,175.86 is: 46,782.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,729.14 : 125,642.67 = 31,175.86 : x
  2. Step 2: Convert to fraction form
    83,729.14/125,642.67 = 31,175.86/x
  3. Step 3: Cross multiply
    83,729.14x = 125,642.67 × 31,175.86
  4. Step 4: Simplify right side
    83,729.14x = 3,917,018,289.95
  5. Step 5: Solve for x
    x = 3,917,018,289.95/83,729.14
  6. Step 6: Final answer
    x = 46,782.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.