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Finding the Fourth Proportional to 81,735.52, 112,805.44 and 49,897.60

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Solution

The fourth proportional to 81,735.52, 112,805.44 and 49,897.60 is: 68,865.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,735.52 : 112,805.44 = 49,897.60 : x
  2. Step 2: Convert to fraction form
    81,735.52/112,805.44 = 49,897.60/x
  3. Step 3: Cross multiply
    81,735.52x = 112,805.44 × 49,897.60
  4. Step 4: Simplify right side
    81,735.52x = 5,628,720,722.94
  5. Step 5: Solve for x
    x = 5,628,720,722.94/81,735.52
  6. Step 6: Final answer
    x = 68,865.05

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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.