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Finding the Fourth Proportional to 73,216.32, 109,699.17 and 39,959.74

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Solution

The fourth proportional to 73,216.32, 109,699.17 and 39,959.74 is: 59,871.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,216.32 : 109,699.17 = 39,959.74 : x
  2. Step 2: Convert to fraction form
    73,216.32/109,699.17 = 39,959.74/x
  3. Step 3: Cross multiply
    73,216.32x = 109,699.17 × 39,959.74
  4. Step 4: Simplify right side
    73,216.32x = 4,383,550,311.42
  5. Step 5: Solve for x
    x = 4,383,550,311.42/73,216.32
  6. Step 6: Final answer
    x = 59,871.22

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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.