Home / 86,440.13-129,660.22-27,280.43

Finding the Fourth Proportional to 86,440.13, 129,660.22 and 27,280.43

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Solution

The fourth proportional to 86,440.13, 129,660.22 and 27,280.43 is: 40,920.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,440.13 : 129,660.22 = 27,280.43 : x
  2. Step 2: Convert to fraction form
    86,440.13/129,660.22 = 27,280.43/x
  3. Step 3: Cross multiply
    86,440.13x = 129,660.22 × 27,280.43
  4. Step 4: Simplify right side
    86,440.13x = 3,537,186,555.49
  5. Step 5: Solve for x
    x = 3,537,186,555.49/86,440.13
  6. Step 6: Final answer
    x = 40,920.65

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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.