Home / 86,425.38-129,429.09-71,524.62

Finding the Fourth Proportional to 86,425.38, 129,429.09 and 71,524.62

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Solution

The fourth proportional to 86,425.38, 129,429.09 and 71,524.62 is: 107,113.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,425.38 : 129,429.09 = 71,524.62 : x
  2. Step 2: Convert to fraction form
    86,425.38/129,429.09 = 71,524.62/x
  3. Step 3: Cross multiply
    86,425.38x = 129,429.09 × 71,524.62
  4. Step 4: Simplify right side
    86,425.38x = 9,257,366,479.20
  5. Step 5: Solve for x
    x = 9,257,366,479.20/86,425.38
  6. Step 6: Final answer
    x = 107,113.98

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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.