Home / 81,076.25-111,878.82-47,079.18

Finding the Fourth Proportional to 81,076.25, 111,878.82 and 47,079.18

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Solution

The fourth proportional to 81,076.25, 111,878.82 and 47,079.18 is: 64,965.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,076.25 : 111,878.82 = 47,079.18 : x
  2. Step 2: Convert to fraction form
    81,076.25/111,878.82 = 47,079.18/x
  3. Step 3: Cross multiply
    81,076.25x = 111,878.82 × 47,079.18
  4. Step 4: Simplify right side
    81,076.25x = 5,267,163,104.97
  5. Step 5: Solve for x
    x = 5,267,163,104.97/81,076.25
  6. Step 6: Final answer
    x = 64,965.55

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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.