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Finding the Fourth Proportional to 73,218.30, 109,827.45 and 72,699.90

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Solution

The fourth proportional to 73,218.30, 109,827.45 and 72,699.90 is: 109,049.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,218.30 : 109,827.45 = 72,699.90 : x
  2. Step 2: Convert to fraction form
    73,218.30/109,827.45 = 72,699.90/x
  3. Step 3: Cross multiply
    73,218.30x = 109,827.45 × 72,699.90
  4. Step 4: Simplify right side
    73,218.30x = 7,984,444,632.26
  5. Step 5: Solve for x
    x = 7,984,444,632.26/73,218.30
  6. Step 6: Final answer
    x = 109,049.85

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1.5x scale

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.