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Finding the Fourth Proportional to 64,079.98, 96,119.37 and 21,388.61

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Solution

The fourth proportional to 64,079.98, 96,119.37 and 21,388.61 is: 32,082.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,079.98 : 96,119.37 = 21,388.61 : x
  2. Step 2: Convert to fraction form
    64,079.98/96,119.37 = 21,388.61/x
  3. Step 3: Cross multiply
    64,079.98x = 96,119.37 × 21,388.61
  4. Step 4: Simplify right side
    64,079.98x = 2,055,859,958.67
  5. Step 5: Solve for x
    x = 2,055,859,958.67/64,079.98
  6. Step 6: Final answer
    x = 32,082.72

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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.