Home / 57,721.20-86,500.80-45,895.20

Finding the Fourth Proportional to 57,721.20, 86,500.80 and 45,895.20

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Solution

The fourth proportional to 57,721.20, 86,500.80 and 45,895.20 is: 68,778.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,721.20 : 86,500.80 = 45,895.20 : x
  2. Step 2: Convert to fraction form
    57,721.20/86,500.80 = 45,895.20/x
  3. Step 3: Cross multiply
    57,721.20x = 86,500.80 × 45,895.20
  4. Step 4: Simplify right side
    57,721.20x = 3,969,971,516.16
  5. Step 5: Solve for x
    x = 3,969,971,516.16/57,721.20
  6. Step 6: Final answer
    x = 68,778.40

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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.