Home / 84,643.38-126,949.01-42,512.18

Finding the Fourth Proportional to 84,643.38, 126,949.01 and 42,512.18

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Solution

The fourth proportional to 84,643.38, 126,949.01 and 42,512.18 is: 63,760.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,643.38 : 126,949.01 = 42,512.18 : x
  2. Step 2: Convert to fraction form
    84,643.38/126,949.01 = 42,512.18/x
  3. Step 3: Cross multiply
    84,643.38x = 126,949.01 × 42,512.18
  4. Step 4: Simplify right side
    84,643.38x = 5,396,878,316.64
  5. Step 5: Solve for x
    x = 5,396,878,316.64/84,643.38
  6. Step 6: Final answer
    x = 63,760.19

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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.