Home / 81,534.20-112,469.46-51,271.64

Finding the Fourth Proportional to 81,534.20, 112,469.46 and 51,271.64

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Solution

The fourth proportional to 81,534.20, 112,469.46 and 51,271.64 is: 70,724.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,534.20 : 112,469.46 = 51,271.64 : x
  2. Step 2: Convert to fraction form
    81,534.20/112,469.46 = 51,271.64/x
  3. Step 3: Cross multiply
    81,534.20x = 112,469.46 × 51,271.64
  4. Step 4: Simplify right side
    81,534.20x = 5,766,493,664.11
  5. Step 5: Solve for x
    x = 5,766,493,664.11/81,534.20
  6. Step 6: Final answer
    x = 70,724.85

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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.