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Finding the Fourth Proportional to 69,662.72, 96,135.70 and 39,447.25

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Solution

The fourth proportional to 69,662.72, 96,135.70 and 39,447.25 is: 54,437.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,662.72 : 96,135.70 = 39,447.25 : x
  2. Step 2: Convert to fraction form
    69,662.72/96,135.70 = 39,447.25/x
  3. Step 3: Cross multiply
    69,662.72x = 96,135.70 × 39,447.25
  4. Step 4: Simplify right side
    69,662.72x = 3,792,288,991.83
  5. Step 5: Solve for x
    x = 3,792,288,991.83/69,662.72
  6. Step 6: Final answer
    x = 54,437.85

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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.