Home / 81,322.52-122,123.38-49,917

Finding the Fourth Proportional to 81,322.52, 122,123.38 and 49,917

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Solution

The fourth proportional to 81,322.52, 122,123.38 and 49,917 is: 74,961.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,322.52 : 122,123.38 = 49,917 : x
  2. Step 2: Convert to fraction form
    81,322.52/122,123.38 = 49,917/x
  3. Step 3: Cross multiply
    81,322.52x = 122,123.38 × 49,917
  4. Step 4: Simplify right side
    81,322.52x = 6,096,032,759.46
  5. Step 5: Solve for x
    x = 6,096,032,759.46/81,322.52
  6. Step 6: Final answer
    x = 74,961.19

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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.