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Finding the Fourth Proportional to 57,327.65, 85,979.80 and 21,776.52

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Solution

The fourth proportional to 57,327.65, 85,979.80 and 21,776.52 is: 32,660.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,327.65 : 85,979.80 = 21,776.52 : x
  2. Step 2: Convert to fraction form
    57,327.65/85,979.80 = 21,776.52/x
  3. Step 3: Cross multiply
    57,327.65x = 85,979.80 × 21,776.52
  4. Step 4: Simplify right side
    57,327.65x = 1,872,341,003.37
  5. Step 5: Solve for x
    x = 1,872,341,003.37/57,327.65
  6. Step 6: Final answer
    x = 32,660.35

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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.