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Finding the Fourth Proportional to 63,728.37, 87,969.24 and 54,739.80

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Solution

The fourth proportional to 63,728.37, 87,969.24 and 54,739.80 is: 75,561.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,728.37 : 87,969.24 = 54,739.80 : x
  2. Step 2: Convert to fraction form
    63,728.37/87,969.24 = 54,739.80/x
  3. Step 3: Cross multiply
    63,728.37x = 87,969.24 × 54,739.80
  4. Step 4: Simplify right side
    63,728.37x = 4,815,418,603.75
  5. Step 5: Solve for x
    x = 4,815,418,603.75/63,728.37
  6. Step 6: Final answer
    x = 75,561.62

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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.