Home / 81,988.72-122,987.50-25,833.24

Finding the Fourth Proportional to 81,988.72, 122,987.50 and 25,833.24

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Solution

The fourth proportional to 81,988.72, 122,987.50 and 25,833.24 is: 38,751.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,988.72 : 122,987.50 = 25,833.24 : x
  2. Step 2: Convert to fraction form
    81,988.72/122,987.50 = 25,833.24/x
  3. Step 3: Cross multiply
    81,988.72x = 122,987.50 × 25,833.24
  4. Step 4: Simplify right side
    81,988.72x = 3,177,165,604.50
  5. Step 5: Solve for x
    x = 3,177,165,604.50/81,988.72
  6. Step 6: Final answer
    x = 38,751.25

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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.