Home / 91,721.20-126,581.80-50,898.72

Finding the Fourth Proportional to 91,721.20, 126,581.80 and 50,898.72

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Solution

The fourth proportional to 91,721.20, 126,581.80 and 50,898.72 is: 70,243.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,721.20 : 126,581.80 = 50,898.72 : x
  2. Step 2: Convert to fraction form
    91,721.20/126,581.80 = 50,898.72/x
  3. Step 3: Cross multiply
    91,721.20x = 126,581.80 × 50,898.72
  4. Step 4: Simplify right side
    91,721.20x = 6,442,851,595.30
  5. Step 5: Solve for x
    x = 6,442,851,595.30/91,721.20
  6. Step 6: Final answer
    x = 70,243.87

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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.