Home / 86,620.43-129,922.13-58,719.71

Finding the Fourth Proportional to 86,620.43, 129,922.13 and 58,719.71

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Solution

The fourth proportional to 86,620.43, 129,922.13 and 58,719.71 is: 88,073.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,620.43 : 129,922.13 = 58,719.71 : x
  2. Step 2: Convert to fraction form
    86,620.43/129,922.13 = 58,719.71/x
  3. Step 3: Cross multiply
    86,620.43x = 129,922.13 × 58,719.71
  4. Step 4: Simplify right side
    86,620.43x = 7,628,988,852.97
  5. Step 5: Solve for x
    x = 7,628,988,852.97/86,620.43
  6. Step 6: Final answer
    x = 88,073.79

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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.