Home / 81,273.90-112,180.52-47,288.95

Finding the Fourth Proportional to 81,273.90, 112,180.52 and 47,288.95

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Solution

The fourth proportional to 81,273.90, 112,180.52 and 47,288.95 is: 65,271.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,273.90 : 112,180.52 = 47,288.95 : x
  2. Step 2: Convert to fraction form
    81,273.90/112,180.52 = 47,288.95/x
  3. Step 3: Cross multiply
    81,273.90x = 112,180.52 × 47,288.95
  4. Step 4: Simplify right side
    81,273.90x = 5,304,899,001.25
  5. Step 5: Solve for x
    x = 5,304,899,001.25/81,273.90
  6. Step 6: Final answer
    x = 65,271.86

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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.