Home / 81,593.19-122,362.06-28,272.72

Finding the Fourth Proportional to 81,593.19, 122,362.06 and 28,272.72

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Solution

The fourth proportional to 81,593.19, 122,362.06 and 28,272.72 is: 42,399.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,593.19 : 122,362.06 = 28,272.72 : x
  2. Step 2: Convert to fraction form
    81,593.19/122,362.06 = 28,272.72/x
  3. Step 3: Cross multiply
    81,593.19x = 122,362.06 × 28,272.72
  4. Step 4: Simplify right side
    81,593.19x = 3,459,508,358.05
  5. Step 5: Solve for x
    x = 3,459,508,358.05/81,593.19
  6. Step 6: Final answer
    x = 42,399.48

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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.