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Finding the Fourth Proportional to 62,728.80, 86,559.90 and 37,230.78

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Solution

The fourth proportional to 62,728.80, 86,559.90 and 37,230.78 is: 51,375.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,728.80 : 86,559.90 = 37,230.78 : x
  2. Step 2: Convert to fraction form
    62,728.80/86,559.90 = 37,230.78/x
  3. Step 3: Cross multiply
    62,728.80x = 86,559.90 × 37,230.78
  4. Step 4: Simplify right side
    62,728.80x = 3,222,692,593.72
  5. Step 5: Solve for x
    x = 3,222,692,593.72/62,728.80
  6. Step 6: Final answer
    x = 51,375.01

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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.