Home / 84,640.71-126,965.13-69,822.18

Finding the Fourth Proportional to 84,640.71, 126,965.13 and 69,822.18

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Solution

The fourth proportional to 84,640.71, 126,965.13 and 69,822.18 is: 104,736.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,640.71 : 126,965.13 = 69,822.18 : x
  2. Step 2: Convert to fraction form
    84,640.71/126,965.13 = 69,822.18/x
  3. Step 3: Cross multiply
    84,640.71x = 126,965.13 × 69,822.18
  4. Step 4: Simplify right side
    84,640.71x = 8,864,982,160.58
  5. Step 5: Solve for x
    x = 8,864,982,160.58/84,640.71
  6. Step 6: Final answer
    x = 104,736.62

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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.