Home / 84,078.28-126,196.16-42,554.44

Finding the Fourth Proportional to 84,078.28, 126,196.16 and 42,554.44

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Solution

The fourth proportional to 84,078.28, 126,196.16 and 42,554.44 is: 63,871.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,078.28 : 126,196.16 = 42,554.44 : x
  2. Step 2: Convert to fraction form
    84,078.28/126,196.16 = 42,554.44/x
  3. Step 3: Cross multiply
    84,078.28x = 126,196.16 × 42,554.44
  4. Step 4: Simplify right side
    84,078.28x = 5,370,206,918.95
  5. Step 5: Solve for x
    x = 5,370,206,918.95/84,078.28
  6. Step 6: Final answer
    x = 63,871.51

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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.