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Finding the Fourth Proportional to 72,816.74, 109,241.65 and 22,220.29

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Solution

The fourth proportional to 72,816.74, 109,241.65 and 22,220.29 is: 33,335.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,816.74 : 109,241.65 = 22,220.29 : x
  2. Step 2: Convert to fraction form
    72,816.74/109,241.65 = 22,220.29/x
  3. Step 3: Cross multiply
    72,816.74x = 109,241.65 × 22,220.29
  4. Step 4: Simplify right side
    72,816.74x = 2,427,381,000.16
  5. Step 5: Solve for x
    x = 2,427,381,000.16/72,816.74
  6. Step 6: Final answer
    x = 33,335.48

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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.