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Finding the Fourth Proportional to 64,450.68, 96,675.84 and 20,079.96

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Solution

The fourth proportional to 64,450.68, 96,675.84 and 20,079.96 is: 30,119.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,450.68 : 96,675.84 = 20,079.96 : x
  2. Step 2: Convert to fraction form
    64,450.68/96,675.84 = 20,079.96/x
  3. Step 3: Cross multiply
    64,450.68x = 96,675.84 × 20,079.96
  4. Step 4: Simplify right side
    64,450.68x = 1,941,247,000.17
  5. Step 5: Solve for x
    x = 1,941,247,000.17/64,450.68
  6. Step 6: Final answer
    x = 30,119.88

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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.