Home / 81,921.95-122,725.47-50,239.62

Finding the Fourth Proportional to 81,921.95, 122,725.47 and 50,239.62

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Solution

The fourth proportional to 81,921.95, 122,725.47 and 50,239.62 is: 75,262.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,921.95 : 122,725.47 = 50,239.62 : x
  2. Step 2: Convert to fraction form
    81,921.95/122,725.47 = 50,239.62/x
  3. Step 3: Cross multiply
    81,921.95x = 122,725.47 × 50,239.62
  4. Step 4: Simplify right side
    81,921.95x = 6,165,680,977.12
  5. Step 5: Solve for x
    x = 6,165,680,977.12/81,921.95
  6. Step 6: Final answer
    x = 75,262.87

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1.5x scale

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.