Home / 67,581.42-101,365.65-20,821.74

Finding the Fourth Proportional to 67,581.42, 101,365.65 and 20,821.74

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Solution

The fourth proportional to 67,581.42, 101,365.65 and 20,821.74 is: 31,230.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,581.42 : 101,365.65 = 20,821.74 : x
  2. Step 2: Convert to fraction form
    67,581.42/101,365.65 = 20,821.74/x
  3. Step 3: Cross multiply
    67,581.42x = 101,365.65 × 20,821.74
  4. Step 4: Simplify right side
    67,581.42x = 2,110,609,209.23
  5. Step 5: Solve for x
    x = 2,110,609,209.23/67,581.42
  6. Step 6: Final answer
    x = 31,230.61

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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.