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Finding the Fourth Proportional to 55,231.86, 82,860.78 and 15,787.92

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Solution

The fourth proportional to 55,231.86, 82,860.78 and 15,787.92 is: 23,685.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,231.86 : 82,860.78 = 15,787.92 : x
  2. Step 2: Convert to fraction form
    55,231.86/82,860.78 = 15,787.92/x
  3. Step 3: Cross multiply
    55,231.86x = 82,860.78 × 15,787.92
  4. Step 4: Simplify right side
    55,231.86x = 1,308,199,365.78
  5. Step 5: Solve for x
    x = 1,308,199,365.78/55,231.86
  6. Step 6: Final answer
    x = 23,685.59

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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.