Home / 80,725.74-111,335.07-71,657.73

Finding the Fourth Proportional to 80,725.74, 111,335.07 and 71,657.73

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Solution

The fourth proportional to 80,725.74, 111,335.07 and 71,657.73 is: 98,828.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,725.74 : 111,335.07 = 71,657.73 : x
  2. Step 2: Convert to fraction form
    80,725.74/111,335.07 = 71,657.73/x
  3. Step 3: Cross multiply
    80,725.74x = 111,335.07 × 71,657.73
  4. Step 4: Simplify right side
    80,725.74x = 7,978,018,385.59
  5. Step 5: Solve for x
    x = 7,978,018,385.59/80,725.74
  6. Step 6: Final answer
    x = 98,828.68

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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.