Home / 81,791.04-122,672.64-26,387.04

Finding the Fourth Proportional to 81,791.04, 122,672.64 and 26,387.04

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Solution

The fourth proportional to 81,791.04, 122,672.64 and 26,387.04 is: 39,576.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,791.04 : 122,672.64 = 26,387.04 : x
  2. Step 2: Convert to fraction form
    81,791.04/122,672.64 = 26,387.04/x
  3. Step 3: Cross multiply
    81,791.04x = 122,672.64 × 26,387.04
  4. Step 4: Simplify right side
    81,791.04x = 3,236,967,858.59
  5. Step 5: Solve for x
    x = 3,236,967,858.59/81,791.04
  6. Step 6: Final answer
    x = 39,576.07

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1.5x scale

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.