Home / 86,345.44-129,481.14-30,168.70

Finding the Fourth Proportional to 86,345.44, 129,481.14 and 30,168.70

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Solution

The fourth proportional to 86,345.44, 129,481.14 and 30,168.70 is: 45,240.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,345.44 : 129,481.14 = 30,168.70 : x
  2. Step 2: Convert to fraction form
    86,345.44/129,481.14 = 30,168.70/x
  3. Step 3: Cross multiply
    86,345.44x = 129,481.14 × 30,168.70
  4. Step 4: Simplify right side
    86,345.44x = 3,906,277,668.32
  5. Step 5: Solve for x
    x = 3,906,277,668.32/86,345.44
  6. Step 6: Final answer
    x = 45,240.12

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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.