Home / 86,632.13-129,948.20-20,968.13

Finding the Fourth Proportional to 86,632.13, 129,948.20 and 20,968.13

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Solution

The fourth proportional to 86,632.13, 129,948.20 and 20,968.13 is: 31,452.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,632.13 : 129,948.20 = 20,968.13 : x
  2. Step 2: Convert to fraction form
    86,632.13/129,948.20 = 20,968.13/x
  3. Step 3: Cross multiply
    86,632.13x = 129,948.20 × 20,968.13
  4. Step 4: Simplify right side
    86,632.13x = 2,724,770,750.87
  5. Step 5: Solve for x
    x = 2,724,770,750.87/86,632.13
  6. Step 6: Final answer
    x = 31,452.20

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Similar ratio
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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.