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Finding the Fourth Proportional to 73,205.10, 109,807.65 and 72,767.70

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Solution

The fourth proportional to 73,205.10, 109,807.65 and 72,767.70 is: 109,151.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,205.10 : 109,807.65 = 72,767.70 : x
  2. Step 2: Convert to fraction form
    73,205.10/109,807.65 = 72,767.70/x
  3. Step 3: Cross multiply
    73,205.10x = 109,807.65 × 72,767.70
  4. Step 4: Simplify right side
    73,205.10x = 7,990,450,132.91
  5. Step 5: Solve for x
    x = 7,990,450,132.91/73,205.10
  6. Step 6: Final answer
    x = 109,151.55

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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.