Home / 86,449.56-129,704.86-30,305.32

Finding the Fourth Proportional to 86,449.56, 129,704.86 and 30,305.32

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Solution

The fourth proportional to 86,449.56, 129,704.86 and 30,305.32 is: 45,468.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,449.56 : 129,704.86 = 30,305.32 : x
  2. Step 2: Convert to fraction form
    86,449.56/129,704.86 = 30,305.32/x
  3. Step 3: Cross multiply
    86,449.56x = 129,704.86 × 30,305.32
  4. Step 4: Simplify right side
    86,449.56x = 3,930,747,287.86
  5. Step 5: Solve for x
    x = 3,930,747,287.86/86,449.56
  6. Step 6: Final answer
    x = 45,468.68

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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.