Home / 83,672.28-115,695.09-82,320.39

Finding the Fourth Proportional to 83,672.28, 115,695.09 and 82,320.39

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Solution

The fourth proportional to 83,672.28, 115,695.09 and 82,320.39 is: 113,825.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,672.28 : 115,695.09 = 82,320.39 : x
  2. Step 2: Convert to fraction form
    83,672.28/115,695.09 = 82,320.39/x
  3. Step 3: Cross multiply
    83,672.28x = 115,695.09 × 82,320.39
  4. Step 4: Simplify right side
    83,672.28x = 9,524,064,929.89
  5. Step 5: Solve for x
    x = 9,524,064,929.89/83,672.28
  6. Step 6: Final answer
    x = 113,825.81

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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.