Home / 81,871.04-122,599.20-50,611.52

Finding the Fourth Proportional to 81,871.04, 122,599.20 and 50,611.52

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Solution

The fourth proportional to 81,871.04, 122,599.20 and 50,611.52 is: 75,789.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,871.04 : 122,599.20 = 50,611.52 : x
  2. Step 2: Convert to fraction form
    81,871.04/122,599.20 = 50,611.52/x
  3. Step 3: Cross multiply
    81,871.04x = 122,599.20 × 50,611.52
  4. Step 4: Simplify right side
    81,871.04x = 6,204,931,862.78
  5. Step 5: Solve for x
    x = 6,204,931,862.78/81,871.04
  6. Step 6: Final answer
    x = 75,789.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.