Home / 81,787.88-112,874.66-45,986.60

Finding the Fourth Proportional to 81,787.88, 112,874.66 and 45,986.60

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Solution

The fourth proportional to 81,787.88, 112,874.66 and 45,986.60 is: 63,465.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,787.88 : 112,874.66 = 45,986.60 : x
  2. Step 2: Convert to fraction form
    81,787.88/112,874.66 = 45,986.60/x
  3. Step 3: Cross multiply
    81,787.88x = 112,874.66 × 45,986.60
  4. Step 4: Simplify right side
    81,787.88x = 5,190,721,839.56
  5. Step 5: Solve for x
    x = 5,190,721,839.56/81,787.88
  6. Step 6: Final answer
    x = 63,465.66

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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.