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Finding the Fourth Proportional to 79,321.30, 118,903.10 and 39,757.66

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Solution

The fourth proportional to 79,321.30, 118,903.10 and 39,757.66 is: 59,596.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,321.30 : 118,903.10 = 39,757.66 : x
  2. Step 2: Convert to fraction form
    79,321.30/118,903.10 = 39,757.66/x
  3. Step 3: Cross multiply
    79,321.30x = 118,903.10 × 39,757.66
  4. Step 4: Simplify right side
    79,321.30x = 4,727,309,022.75
  5. Step 5: Solve for x
    x = 4,727,309,022.75/79,321.30
  6. Step 6: Final answer
    x = 59,596.97

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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.