Home / 86,440.38-129,660.59-27,280.68

Finding the Fourth Proportional to 86,440.38, 129,660.59 and 27,280.68

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Solution

The fourth proportional to 86,440.38, 129,660.59 and 27,280.68 is: 40,921.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,440.38 : 129,660.59 = 27,280.68 : x
  2. Step 2: Convert to fraction form
    86,440.38/129,660.59 = 27,280.68/x
  3. Step 3: Cross multiply
    86,440.38x = 129,660.59 × 27,280.68
  4. Step 4: Simplify right side
    86,440.38x = 3,537,229,132.60
  5. Step 5: Solve for x
    x = 3,537,229,132.60/86,440.38
  6. Step 6: Final answer
    x = 40,921.03

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1.5x scale

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.