Home / 81,608.43-122,338.77-29,005.61

Finding the Fourth Proportional to 81,608.43, 122,338.77 and 29,005.61

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Solution

The fourth proportional to 81,608.43, 122,338.77 and 29,005.61 is: 43,482.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,608.43 : 122,338.77 = 29,005.61 : x
  2. Step 2: Convert to fraction form
    81,608.43/122,338.77 = 29,005.61/x
  3. Step 3: Cross multiply
    81,608.43x = 122,338.77 × 29,005.61
  4. Step 4: Simplify right side
    81,608.43x = 3,548,510,038.81
  5. Step 5: Solve for x
    x = 3,548,510,038.81/81,608.43
  6. Step 6: Final answer
    x = 43,482.15

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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.