Home / 81,115.94-111,915.52-47,117.82

Finding the Fourth Proportional to 81,115.94, 111,915.52 and 47,117.82

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Solution

The fourth proportional to 81,115.94, 111,915.52 and 47,117.82 is: 65,008.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,115.94 : 111,915.52 = 47,117.82 : x
  2. Step 2: Convert to fraction form
    81,115.94/111,915.52 = 47,117.82/x
  3. Step 3: Cross multiply
    81,115.94x = 111,915.52 × 47,117.82
  4. Step 4: Simplify right side
    81,115.94x = 5,273,215,326.57
  5. Step 5: Solve for x
    x = 5,273,215,326.57/81,115.94
  6. Step 6: Final answer
    x = 65,008.37

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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.