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Finding the Fourth Proportional to 64,474.40, 88,968.72 and 36,174.88

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Solution

The fourth proportional to 64,474.40, 88,968.72 and 36,174.88 is: 49,917.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,474.40 : 88,968.72 = 36,174.88 : x
  2. Step 2: Convert to fraction form
    64,474.40/88,968.72 = 36,174.88/x
  3. Step 3: Cross multiply
    64,474.40x = 88,968.72 × 36,174.88
  4. Step 4: Simplify right side
    64,474.40x = 3,218,432,769.75
  5. Step 5: Solve for x
    x = 3,218,432,769.75/64,474.40
  6. Step 6: Final answer
    x = 49,917.99

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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.