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Finding the Fourth Proportional to 63,550.72, 95,326.80 and 21,988

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Solution

The fourth proportional to 63,550.72, 95,326.80 and 21,988 is: 32,982.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,550.72 : 95,326.80 = 21,988 : x
  2. Step 2: Convert to fraction form
    63,550.72/95,326.80 = 21,988/x
  3. Step 3: Cross multiply
    63,550.72x = 95,326.80 × 21,988
  4. Step 4: Simplify right side
    63,550.72x = 2,096,045,678.40
  5. Step 5: Solve for x
    x = 2,096,045,678.40/63,550.72
  6. Step 6: Final answer
    x = 32,982.25

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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.