Home / 81,137.57-121,712.42-25,016.72

Finding the Fourth Proportional to 81,137.57, 121,712.42 and 25,016.72

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Solution

The fourth proportional to 81,137.57, 121,712.42 and 25,016.72 is: 37,526.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,137.57 : 121,712.42 = 25,016.72 : x
  2. Step 2: Convert to fraction form
    81,137.57/121,712.42 = 25,016.72/x
  3. Step 3: Cross multiply
    81,137.57x = 121,712.42 × 25,016.72
  4. Step 4: Simplify right side
    81,137.57x = 3,044,844,985.64
  5. Step 5: Solve for x
    x = 3,044,844,985.64/81,137.57
  6. Step 6: Final answer
    x = 37,526.95

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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.