Home / 39,780.81-54,895.19-22,787.82

Finding the Fourth Proportional to 39,780.81, 54,895.19 and 22,787.82

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Solution

The fourth proportional to 39,780.81, 54,895.19 and 22,787.82 is: 31,445.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,780.81 : 54,895.19 = 22,787.82 : x
  2. Step 2: Convert to fraction form
    39,780.81/54,895.19 = 22,787.82/x
  3. Step 3: Cross multiply
    39,780.81x = 54,895.19 × 22,787.82
  4. Step 4: Simplify right side
    39,780.81x = 1,250,941,594.65
  5. Step 5: Solve for x
    x = 1,250,941,594.65/39,780.81
  6. Step 6: Final answer
    x = 31,445.86

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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.