Home / 87,987.38-121,394.04-49,743.23

Finding the Fourth Proportional to 87,987.38, 121,394.04 and 49,743.23

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Solution

The fourth proportional to 87,987.38, 121,394.04 and 49,743.23 is: 68,629.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,987.38 : 121,394.04 = 49,743.23 : x
  2. Step 2: Convert to fraction form
    87,987.38/121,394.04 = 49,743.23/x
  3. Step 3: Cross multiply
    87,987.38x = 121,394.04 × 49,743.23
  4. Step 4: Simplify right side
    87,987.38x = 6,038,531,652.35
  5. Step 5: Solve for x
    x = 6,038,531,652.35/87,987.38
  6. Step 6: Final answer
    x = 68,629.52

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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.