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Finding the Fourth Proportional to 72,406.20, 108,560.70 and 34,984.20

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Solution

The fourth proportional to 72,406.20, 108,560.70 and 34,984.20 is: 52,452.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,406.20 : 108,560.70 = 34,984.20 : x
  2. Step 2: Convert to fraction form
    72,406.20/108,560.70 = 34,984.20/x
  3. Step 3: Cross multiply
    72,406.20x = 108,560.70 × 34,984.20
  4. Step 4: Simplify right side
    72,406.20x = 3,797,909,240.94
  5. Step 5: Solve for x
    x = 3,797,909,240.94/72,406.20
  6. Step 6: Final answer
    x = 52,452.82

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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.