Home / 57,718.22-86,590.32-20,280.88

Finding the Fourth Proportional to 57,718.22, 86,590.32 and 20,280.88

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Solution

The fourth proportional to 57,718.22, 86,590.32 and 20,280.88 is: 30,425.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,718.22 : 86,590.32 = 20,280.88 : x
  2. Step 2: Convert to fraction form
    57,718.22/86,590.32 = 20,280.88/x
  3. Step 3: Cross multiply
    57,718.22x = 86,590.32 × 20,280.88
  4. Step 4: Simplify right side
    57,718.22x = 1,756,127,921.27
  5. Step 5: Solve for x
    x = 1,756,127,921.27/57,718.22
  6. Step 6: Final answer
    x = 30,425.88

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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.