Home / 81,617.77-122,453.12-40,035.61

Finding the Fourth Proportional to 81,617.77, 122,453.12 and 40,035.61

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Solution

The fourth proportional to 81,617.77, 122,453.12 and 40,035.61 is: 60,066.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,617.77 : 122,453.12 = 40,035.61 : x
  2. Step 2: Convert to fraction form
    81,617.77/122,453.12 = 40,035.61/x
  3. Step 3: Cross multiply
    81,617.77x = 122,453.12 × 40,035.61
  4. Step 4: Simplify right side
    81,617.77x = 4,902,485,355.60
  5. Step 5: Solve for x
    x = 4,902,485,355.60/81,617.77
  6. Step 6: Final answer
    x = 60,066.40

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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.