Home / 81,558.03-122,197.59-63,781.91

Finding the Fourth Proportional to 81,558.03, 122,197.59 and 63,781.91

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Solution

The fourth proportional to 81,558.03, 122,197.59 and 63,781.91 is: 95,563.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,558.03 : 122,197.59 = 63,781.91 : x
  2. Step 2: Convert to fraction form
    81,558.03/122,197.59 = 63,781.91/x
  3. Step 3: Cross multiply
    81,558.03x = 122,197.59 × 63,781.91
  4. Step 4: Simplify right side
    81,558.03x = 7,793,995,076.61
  5. Step 5: Solve for x
    x = 7,793,995,076.61/81,558.03
  6. Step 6: Final answer
    x = 95,563.80

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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.