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Finding the Fourth Proportional to 86,440.55, 129,660.84 and 27,282.20

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Solution

The fourth proportional to 86,440.55, 129,660.84 and 27,282.20 is: 40,923.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,440.55 : 129,660.84 = 27,282.20 : x
  2. Step 2: Convert to fraction form
    86,440.55/129,660.84 = 27,282.20/x
  3. Step 3: Cross multiply
    86,440.55x = 129,660.84 × 27,282.20
  4. Step 4: Simplify right side
    86,440.55x = 3,537,432,320.74
  5. Step 5: Solve for x
    x = 3,537,432,320.74/86,440.55
  6. Step 6: Final answer
    x = 40,923.30

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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.