Home / 86,909.76-130,319.28-40,195.44

Finding the Fourth Proportional to 86,909.76, 130,319.28 and 40,195.44

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Solution

The fourth proportional to 86,909.76, 130,319.28 and 40,195.44 is: 60,272.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,909.76 : 130,319.28 = 40,195.44 : x
  2. Step 2: Convert to fraction form
    86,909.76/130,319.28 = 40,195.44/x
  3. Step 3: Cross multiply
    86,909.76x = 130,319.28 × 40,195.44
  4. Step 4: Simplify right side
    86,909.76x = 5,238,240,800.08
  5. Step 5: Solve for x
    x = 5,238,240,800.08/86,909.76
  6. Step 6: Final answer
    x = 60,272.18

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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.