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Finding the Fourth Proportional to 72,795.75, 109,193.59 and 20,205.22

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Solution

The fourth proportional to 72,795.75, 109,193.59 and 20,205.22 is: 30,307.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,795.75 : 109,193.59 = 20,205.22 : x
  2. Step 2: Convert to fraction form
    72,795.75/109,193.59 = 20,205.22/x
  3. Step 3: Cross multiply
    72,795.75x = 109,193.59 × 20,205.22
  4. Step 4: Simplify right side
    72,795.75x = 2,206,280,508.54
  5. Step 5: Solve for x
    x = 2,206,280,508.54/72,795.75
  6. Step 6: Final answer
    x = 30,307.82

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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.