Home / 71,725.97-98,986.79-39,897.83

Finding the Fourth Proportional to 71,725.97, 98,986.79 and 39,897.83

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Solution

The fourth proportional to 71,725.97, 98,986.79 and 39,897.83 is: 55,061.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,725.97 : 98,986.79 = 39,897.83 : x
  2. Step 2: Convert to fraction form
    71,725.97/98,986.79 = 39,897.83/x
  3. Step 3: Cross multiply
    71,725.97x = 98,986.79 × 39,897.83
  4. Step 4: Simplify right side
    71,725.97x = 3,949,358,119.67
  5. Step 5: Solve for x
    x = 3,949,358,119.67/71,725.97
  6. Step 6: Final answer
    x = 55,061.76

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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.