Home / 81,636.26-122,417.42-29,047.12

Finding the Fourth Proportional to 81,636.26, 122,417.42 and 29,047.12

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Solution

The fourth proportional to 81,636.26, 122,417.42 and 29,047.12 is: 43,557.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,636.26 : 122,417.42 = 29,047.12 : x
  2. Step 2: Convert to fraction form
    81,636.26/122,417.42 = 29,047.12/x
  3. Step 3: Cross multiply
    81,636.26x = 122,417.42 × 29,047.12
  4. Step 4: Simplify right side
    81,636.26x = 3,555,873,488.83
  5. Step 5: Solve for x
    x = 3,555,873,488.83/81,636.26
  6. Step 6: Final answer
    x = 43,557.53

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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.