Home / 81,736.02-122,616.36-29,141.46

Finding the Fourth Proportional to 81,736.02, 122,616.36 and 29,141.46

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Solution

The fourth proportional to 81,736.02, 122,616.36 and 29,141.46 is: 43,716.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,736.02 : 122,616.36 = 29,141.46 : x
  2. Step 2: Convert to fraction form
    81,736.02/122,616.36 = 29,141.46/x
  3. Step 3: Cross multiply
    81,736.02x = 122,616.36 × 29,141.46
  4. Step 4: Simplify right side
    81,736.02x = 3,573,219,750.29
  5. Step 5: Solve for x
    x = 3,573,219,750.29/81,736.02
  6. Step 6: Final answer
    x = 43,716.59

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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.