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Finding the Fourth Proportional to 57,920.67, 86,881.88 and 22,860

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Solution

The fourth proportional to 57,920.67, 86,881.88 and 22,860 is: 34,290.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,920.67 : 86,881.88 = 22,860 : x
  2. Step 2: Convert to fraction form
    57,920.67/86,881.88 = 22,860/x
  3. Step 3: Cross multiply
    57,920.67x = 86,881.88 × 22,860
  4. Step 4: Simplify right side
    57,920.67x = 1,986,119,833.95
  5. Step 5: Solve for x
    x = 1,986,119,833.95/57,920.67
  6. Step 6: Final answer
    x = 34,290.35

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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.