Home / 86,280.80-129,344.40-51,183.20

Finding the Fourth Proportional to 86,280.80, 129,344.40 and 51,183.20

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Solution

The fourth proportional to 86,280.80, 129,344.40 and 51,183.20 is: 76,729.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,280.80 : 129,344.40 = 51,183.20 : x
  2. Step 2: Convert to fraction form
    86,280.80/129,344.40 = 51,183.20/x
  3. Step 3: Cross multiply
    86,280.80x = 129,344.40 × 51,183.20
  4. Step 4: Simplify right side
    86,280.80x = 6,620,260,294.08
  5. Step 5: Solve for x
    x = 6,620,260,294.08/86,280.80
  6. Step 6: Final answer
    x = 76,729.24

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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.