Home / 91,078.88-136,612.80-34,141.56

Finding the Fourth Proportional to 91,078.88, 136,612.80 and 34,141.56

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Solution

The fourth proportional to 91,078.88, 136,612.80 and 34,141.56 is: 51,210.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,078.88 : 136,612.80 = 34,141.56 : x
  2. Step 2: Convert to fraction form
    91,078.88/136,612.80 = 34,141.56/x
  3. Step 3: Cross multiply
    91,078.88x = 136,612.80 × 34,141.56
  4. Step 4: Simplify right side
    91,078.88x = 4,664,174,107.97
  5. Step 5: Solve for x
    x = 4,664,174,107.97/91,078.88
  6. Step 6: Final answer
    x = 51,210.27

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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.