Home / 86,251.32-129,375.90-30,091.32

Finding the Fourth Proportional to 86,251.32, 129,375.90 and 30,091.32

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Solution

The fourth proportional to 86,251.32, 129,375.90 and 30,091.32 is: 45,136.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,251.32 : 129,375.90 = 30,091.32 : x
  2. Step 2: Convert to fraction form
    86,251.32/129,375.90 = 30,091.32/x
  3. Step 3: Cross multiply
    86,251.32x = 129,375.90 × 30,091.32
  4. Step 4: Simplify right side
    86,251.32x = 3,893,091,607.19
  5. Step 5: Solve for x
    x = 3,893,091,607.19/86,251.32
  6. Step 6: Final answer
    x = 45,136.60

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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.