Home / 81,186.48-121,782.24-22,021.92

Finding the Fourth Proportional to 81,186.48, 121,782.24 and 22,021.92

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Solution

The fourth proportional to 81,186.48, 121,782.24 and 22,021.92 is: 33,033.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,186.48 : 121,782.24 = 22,021.92 : x
  2. Step 2: Convert to fraction form
    81,186.48/121,782.24 = 22,021.92/x
  3. Step 3: Cross multiply
    81,186.48x = 121,782.24 × 22,021.92
  4. Step 4: Simplify right side
    81,186.48x = 2,681,878,746.70
  5. Step 5: Solve for x
    x = 2,681,878,746.70/81,186.48
  6. Step 6: Final answer
    x = 33,033.56

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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.