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Finding the Fourth Proportional to 52,896.56, 79,342.68 and 21,731

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Solution

The fourth proportional to 52,896.56, 79,342.68 and 21,731 is: 32,595.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,896.56 : 79,342.68 = 21,731 : x
  2. Step 2: Convert to fraction form
    52,896.56/79,342.68 = 21,731/x
  3. Step 3: Cross multiply
    52,896.56x = 79,342.68 × 21,731
  4. Step 4: Simplify right side
    52,896.56x = 1,724,195,779.08
  5. Step 5: Solve for x
    x = 1,724,195,779.08/52,896.56
  6. Step 6: Final answer
    x = 32,595.61

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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.