Home / 86,207.50-129,311.28-27,047.80

Finding the Fourth Proportional to 86,207.50, 129,311.28 and 27,047.80

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Solution

The fourth proportional to 86,207.50, 129,311.28 and 27,047.80 is: 40,571.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,207.50 : 129,311.28 = 27,047.80 : x
  2. Step 2: Convert to fraction form
    86,207.50/129,311.28 = 27,047.80/x
  3. Step 3: Cross multiply
    86,207.50x = 129,311.28 × 27,047.80
  4. Step 4: Simplify right side
    86,207.50x = 3,497,585,639.18
  5. Step 5: Solve for x
    x = 3,497,585,639.18/86,207.50
  6. Step 6: Final answer
    x = 40,571.71

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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.