Home / 81,305.43-121,927.85-27,982.50

Finding the Fourth Proportional to 81,305.43, 121,927.85 and 27,982.50

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Solution

The fourth proportional to 81,305.43, 121,927.85 and 27,982.50 is: 41,963.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,305.43 : 121,927.85 = 27,982.50 : x
  2. Step 2: Convert to fraction form
    81,305.43/121,927.85 = 27,982.50/x
  3. Step 3: Cross multiply
    81,305.43x = 121,927.85 × 27,982.50
  4. Step 4: Simplify right side
    81,305.43x = 3,411,845,922.71
  5. Step 5: Solve for x
    x = 3,411,845,922.71/81,305.43
  6. Step 6: Final answer
    x = 41,963.32

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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.