Home / 81,515.74-122,265.42-22,357.36

Finding the Fourth Proportional to 81,515.74, 122,265.42 and 22,357.36

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Solution

The fourth proportional to 81,515.74, 122,265.42 and 22,357.36 is: 33,533.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,515.74 : 122,265.42 = 22,357.36 : x
  2. Step 2: Convert to fraction form
    81,515.74/122,265.42 = 22,357.36/x
  3. Step 3: Cross multiply
    81,515.74x = 122,265.42 × 22,357.36
  4. Step 4: Simplify right side
    81,515.74x = 2,733,532,010.49
  5. Step 5: Solve for x
    x = 2,733,532,010.49/81,515.74
  6. Step 6: Final answer
    x = 33,533.79

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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.