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Finding the Fourth Proportional to 81,737.28, 112,797.36 and 47,769.12

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Solution

The fourth proportional to 81,737.28, 112,797.36 and 47,769.12 is: 65,921.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,737.28 : 112,797.36 = 47,769.12 : x
  2. Step 2: Convert to fraction form
    81,737.28/112,797.36 = 47,769.12/x
  3. Step 3: Cross multiply
    81,737.28x = 112,797.36 × 47,769.12
  4. Step 4: Simplify right side
    81,737.28x = 5,388,230,625.52
  5. Step 5: Solve for x
    x = 5,388,230,625.52/81,737.28
  6. Step 6: Final answer
    x = 65,921.34

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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.