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Finding the Fourth Proportional to 72,793.26, 100,221.62 and 71,205.08

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Solution

The fourth proportional to 72,793.26, 100,221.62 and 71,205.08 is: 98,035.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,793.26 : 100,221.62 = 71,205.08 : x
  2. Step 2: Convert to fraction form
    72,793.26/100,221.62 = 71,205.08/x
  3. Step 3: Cross multiply
    72,793.26x = 100,221.62 × 71,205.08
  4. Step 4: Simplify right side
    72,793.26x = 7,136,287,612.70
  5. Step 5: Solve for x
    x = 7,136,287,612.70/72,793.26
  6. Step 6: Final answer
    x = 98,035.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.