Home / 81,028.56-121,542.83-21,864.23

Finding the Fourth Proportional to 81,028.56, 121,542.83 and 21,864.23

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Solution

The fourth proportional to 81,028.56, 121,542.83 and 21,864.23 is: 32,796.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,028.56 : 121,542.83 = 21,864.23 : x
  2. Step 2: Convert to fraction form
    81,028.56/121,542.83 = 21,864.23/x
  3. Step 3: Cross multiply
    81,028.56x = 121,542.83 × 21,864.23
  4. Step 4: Simplify right side
    81,028.56x = 2,657,440,333.70
  5. Step 5: Solve for x
    x = 2,657,440,333.70/81,028.56
  6. Step 6: Final answer
    x = 32,796.34

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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.