Home / 81,721.01-112,784.15-49,473.41

Finding the Fourth Proportional to 81,721.01, 112,784.15 and 49,473.41

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Solution

The fourth proportional to 81,721.01, 112,784.15 and 49,473.41 is: 68,278.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,721.01 : 112,784.15 = 49,473.41 : x
  2. Step 2: Convert to fraction form
    81,721.01/112,784.15 = 49,473.41/x
  3. Step 3: Cross multiply
    81,721.01x = 112,784.15 × 49,473.41
  4. Step 4: Simplify right side
    81,721.01x = 5,579,816,494.45
  5. Step 5: Solve for x
    x = 5,579,816,494.45/81,721.01
  6. Step 6: Final answer
    x = 68,278.85

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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.