Home / 84,359.96-126,536.78-21,180.50

Finding the Fourth Proportional to 84,359.96, 126,536.78 and 21,180.50

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Solution

The fourth proportional to 84,359.96, 126,536.78 and 21,180.50 is: 31,769.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,359.96 : 126,536.78 = 21,180.50 : x
  2. Step 2: Convert to fraction form
    84,359.96/126,536.78 = 21,180.50/x
  3. Step 3: Cross multiply
    84,359.96x = 126,536.78 × 21,180.50
  4. Step 4: Simplify right side
    84,359.96x = 2,680,111,530.20
  5. Step 5: Solve for x
    x = 2,680,111,530.20/84,359.96
  6. Step 6: Final answer
    x = 31,769.95

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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.