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Finding the Fourth Proportional to 73,400.30, 110,100.45 and 72,709.10

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Solution

The fourth proportional to 73,400.30, 110,100.45 and 72,709.10 is: 109,063.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,400.30 : 110,100.45 = 72,709.10 : x
  2. Step 2: Convert to fraction form
    73,400.30/110,100.45 = 72,709.10/x
  3. Step 3: Cross multiply
    73,400.30x = 110,100.45 × 72,709.10
  4. Step 4: Simplify right side
    73,400.30x = 8,005,304,629.10
  5. Step 5: Solve for x
    x = 8,005,304,629.10/73,400.30
  6. Step 6: Final answer
    x = 109,063.65

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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.