Home / 100,787.48-139,087.77-57,766.04

Finding the Fourth Proportional to 100,787.48, 139,087.77 and 57,766.04

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Solution

The fourth proportional to 100,787.48, 139,087.77 and 57,766.04 is: 79,717.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,787.48 : 139,087.77 = 57,766.04 : x
  2. Step 2: Convert to fraction form
    100,787.48/139,087.77 = 57,766.04/x
  3. Step 3: Cross multiply
    100,787.48x = 139,087.77 × 57,766.04
  4. Step 4: Simplify right side
    100,787.48x = 8,034,548,989.89
  5. Step 5: Solve for x
    x = 8,034,548,989.89/100,787.48
  6. Step 6: Final answer
    x = 79,717.73

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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.