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Finding the Fourth Proportional to 67,278.49, 100,123.54 and 65,036.21

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Solution

The fourth proportional to 67,278.49, 100,123.54 and 65,036.21 is: 96,786.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,278.49 : 100,123.54 = 65,036.21 : x
  2. Step 2: Convert to fraction form
    67,278.49/100,123.54 = 65,036.21/x
  3. Step 3: Cross multiply
    67,278.49x = 100,123.54 × 65,036.21
  4. Step 4: Simplify right side
    67,278.49x = 6,511,654,910.18
  5. Step 5: Solve for x
    x = 6,511,654,910.18/67,278.49
  6. Step 6: Final answer
    x = 96,786.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.