Home / 81,981.97-122,977.34-25,826.47

Finding the Fourth Proportional to 81,981.97, 122,977.34 and 25,826.47

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Solution

The fourth proportional to 81,981.97, 122,977.34 and 25,826.47 is: 38,741.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,981.97 : 122,977.34 = 25,826.47 : x
  2. Step 2: Convert to fraction form
    81,981.97/122,977.34 = 25,826.47/x
  3. Step 3: Cross multiply
    81,981.97x = 122,977.34 × 25,826.47
  4. Step 4: Simplify right side
    81,981.97x = 3,176,070,339.31
  5. Step 5: Solve for x
    x = 3,176,070,339.31/81,981.97
  6. Step 6: Final answer
    x = 38,741.09

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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.