Home / 81,721.97-112,766.01-47,722.49

Finding the Fourth Proportional to 81,721.97, 112,766.01 and 47,722.49

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Solution

The fourth proportional to 81,721.97, 112,766.01 and 47,722.49 is: 65,851.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,721.97 : 112,766.01 = 47,722.49 : x
  2. Step 2: Convert to fraction form
    81,721.97/112,766.01 = 47,722.49/x
  3. Step 3: Cross multiply
    81,721.97x = 112,766.01 × 47,722.49
  4. Step 4: Simplify right side
    81,721.97x = 5,381,474,784.56
  5. Step 5: Solve for x
    x = 5,381,474,784.56/81,721.97
  6. Step 6: Final answer
    x = 65,851.02

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1.5x scale

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.