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Finding the Fourth Proportional to 63,309.32, 87,309.06 and 54,353.96

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Solution

The fourth proportional to 63,309.32, 87,309.06 and 54,353.96 is: 74,958.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,309.32 : 87,309.06 = 54,353.96 : x
  2. Step 2: Convert to fraction form
    63,309.32/87,309.06 = 54,353.96/x
  3. Step 3: Cross multiply
    63,309.32x = 87,309.06 × 54,353.96
  4. Step 4: Simplify right side
    63,309.32x = 4,745,593,154.88
  5. Step 5: Solve for x
    x = 4,745,593,154.88/63,309.32
  6. Step 6: Final answer
    x = 74,958.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.