Home / 51,787.91-77,698.19-18,507.23

Finding the Fourth Proportional to 51,787.91, 77,698.19 and 18,507.23

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Solution

The fourth proportional to 51,787.91, 77,698.19 and 18,507.23 is: 27,766.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,787.91 : 77,698.19 = 18,507.23 : x
  2. Step 2: Convert to fraction form
    51,787.91/77,698.19 = 18,507.23/x
  3. Step 3: Cross multiply
    51,787.91x = 77,698.19 × 18,507.23
  4. Step 4: Simplify right side
    51,787.91x = 1,437,978,272.91
  5. Step 5: Solve for x
    x = 1,437,978,272.91/51,787.91
  6. Step 6: Final answer
    x = 27,766.68

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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.