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Finding the Fourth Proportional to 86,217.46, 129,331.66 and 27,055.46

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Solution

The fourth proportional to 86,217.46, 129,331.66 and 27,055.46 is: 40,584.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,217.46 : 129,331.66 = 27,055.46 : x
  2. Step 2: Convert to fraction form
    86,217.46/129,331.66 = 27,055.46/x
  3. Step 3: Cross multiply
    86,217.46x = 129,331.66 × 27,055.46
  4. Step 4: Simplify right side
    86,217.46x = 3,499,127,903.58
  5. Step 5: Solve for x
    x = 3,499,127,903.58/86,217.46
  6. Step 6: Final answer
    x = 40,584.91

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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.