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Finding the Fourth Proportional to 73,230.20, 109,851.78 and 20,640.14

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Solution

The fourth proportional to 73,230.20, 109,851.78 and 20,640.14 is: 30,962.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,230.20 : 109,851.78 = 20,640.14 : x
  2. Step 2: Convert to fraction form
    73,230.20/109,851.78 = 20,640.14/x
  3. Step 3: Cross multiply
    73,230.20x = 109,851.78 × 20,640.14
  4. Step 4: Simplify right side
    73,230.20x = 2,267,355,569.19
  5. Step 5: Solve for x
    x = 2,267,355,569.19/73,230.20
  6. Step 6: Final answer
    x = 30,962.03

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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.