Home / 81,768.52-122,700.37-34,380.18

Finding the Fourth Proportional to 81,768.52, 122,700.37 and 34,380.18

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Solution

The fourth proportional to 81,768.52, 122,700.37 and 34,380.18 is: 51,590.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,768.52 : 122,700.37 = 34,380.18 : x
  2. Step 2: Convert to fraction form
    81,768.52/122,700.37 = 34,380.18/x
  3. Step 3: Cross multiply
    81,768.52x = 122,700.37 × 34,380.18
  4. Step 4: Simplify right side
    81,768.52x = 4,218,460,785.18
  5. Step 5: Solve for x
    x = 4,218,460,785.18/81,768.52
  6. Step 6: Final answer
    x = 51,590.28

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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.