Home / 86,212.50-129,318.78-27,052.80

Finding the Fourth Proportional to 86,212.50, 129,318.78 and 27,052.80

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Solution

The fourth proportional to 86,212.50, 129,318.78 and 27,052.80 is: 40,579.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,212.50 : 129,318.78 = 27,052.80 : x
  2. Step 2: Convert to fraction form
    86,212.50/129,318.78 = 27,052.80/x
  3. Step 3: Cross multiply
    86,212.50x = 129,318.78 × 27,052.80
  4. Step 4: Simplify right side
    86,212.50x = 3,498,435,091.58
  5. Step 5: Solve for x
    x = 3,498,435,091.58/86,212.50
  6. Step 6: Final answer
    x = 40,579.21

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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.