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Finding the Fourth Proportional to 66,748.54, 100,123.84 and 21,769.71

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Solution

The fourth proportional to 66,748.54, 100,123.84 and 21,769.71 is: 32,654.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,748.54 : 100,123.84 = 21,769.71 : x
  2. Step 2: Convert to fraction form
    66,748.54/100,123.84 = 21,769.71/x
  3. Step 3: Cross multiply
    66,748.54x = 100,123.84 × 21,769.71
  4. Step 4: Simplify right side
    66,748.54x = 2,179,666,588.27
  5. Step 5: Solve for x
    x = 2,179,666,588.27/66,748.54
  6. Step 6: Final answer
    x = 32,654.89

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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.