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Finding the Fourth Proportional to 57,759.87, 86,639.75 and 21,743.05

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Solution

The fourth proportional to 57,759.87, 86,639.75 and 21,743.05 is: 32,614.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,759.87 : 86,639.75 = 21,743.05 : x
  2. Step 2: Convert to fraction form
    57,759.87/86,639.75 = 21,743.05/x
  3. Step 3: Cross multiply
    57,759.87x = 86,639.75 × 21,743.05
  4. Step 4: Simplify right side
    57,759.87x = 1,883,812,090.92
  5. Step 5: Solve for x
    x = 1,883,812,090.92/57,759.87
  6. Step 6: Final answer
    x = 32,614.55

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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.