Home / 81,385.22-122,112.84-43,937.86

Finding the Fourth Proportional to 81,385.22, 122,112.84 and 43,937.86

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Solution

The fourth proportional to 81,385.22, 122,112.84 and 43,937.86 is: 65,925.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,385.22 : 122,112.84 = 43,937.86 : x
  2. Step 2: Convert to fraction form
    81,385.22/122,112.84 = 43,937.86/x
  3. Step 3: Cross multiply
    81,385.22x = 122,112.84 × 43,937.86
  4. Step 4: Simplify right side
    81,385.22x = 5,365,376,868.12
  5. Step 5: Solve for x
    x = 5,365,376,868.12/81,385.22
  6. Step 6: Final answer
    x = 65,925.69

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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.