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Finding the Fourth Proportional to 71,805.20, 107,664.60 and 36,813.20

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Solution

The fourth proportional to 71,805.20, 107,664.60 and 36,813.20 is: 55,197.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,805.20 : 107,664.60 = 36,813.20 : x
  2. Step 2: Convert to fraction form
    71,805.20/107,664.60 = 36,813.20/x
  3. Step 3: Cross multiply
    71,805.20x = 107,664.60 × 36,813.20
  4. Step 4: Simplify right side
    71,805.20x = 3,963,478,452.72
  5. Step 5: Solve for x
    x = 3,963,478,452.72/71,805.20
  6. Step 6: Final answer
    x = 55,197.65

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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.