Home / 57,291.79-79,077.20-39,149.85

Finding the Fourth Proportional to 57,291.79, 79,077.20 and 39,149.85

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Solution

The fourth proportional to 57,291.79, 79,077.20 and 39,149.85 is: 54,036.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,291.79 : 79,077.20 = 39,149.85 : x
  2. Step 2: Convert to fraction form
    57,291.79/79,077.20 = 39,149.85/x
  3. Step 3: Cross multiply
    57,291.79x = 79,077.20 × 39,149.85
  4. Step 4: Simplify right side
    57,291.79x = 3,095,860,756.57
  5. Step 5: Solve for x
    x = 3,095,860,756.57/57,291.79
  6. Step 6: Final answer
    x = 54,036.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.