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Finding the Fourth Proportional to 67,676.56, 101,514.96 and 18,428.56

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Solution

The fourth proportional to 67,676.56, 101,514.96 and 18,428.56 is: 27,642.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,676.56 : 101,514.96 = 18,428.56 : x
  2. Step 2: Convert to fraction form
    67,676.56/101,514.96 = 18,428.56/x
  3. Step 3: Cross multiply
    67,676.56x = 101,514.96 × 18,428.56
  4. Step 4: Simplify right side
    67,676.56x = 1,870,774,531.26
  5. Step 5: Solve for x
    x = 1,870,774,531.26/67,676.56
  6. Step 6: Final answer
    x = 27,642.87

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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.