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Finding the Fourth Proportional to 39,657.75, 54,727.70 and 22,890.75

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Solution

The fourth proportional to 39,657.75, 54,727.70 and 22,890.75 is: 31,589.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,657.75 : 54,727.70 = 22,890.75 : x
  2. Step 2: Convert to fraction form
    39,657.75/54,727.70 = 22,890.75/x
  3. Step 3: Cross multiply
    39,657.75x = 54,727.70 × 22,890.75
  4. Step 4: Simplify right side
    39,657.75x = 1,252,757,984.32
  5. Step 5: Solve for x
    x = 1,252,757,984.32/39,657.75
  6. Step 6: Final answer
    x = 31,589.24

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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.