Home / 81,231.18-112,119.33-65,035.26

Finding the Fourth Proportional to 81,231.18, 112,119.33 and 65,035.26

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Solution

The fourth proportional to 81,231.18, 112,119.33 and 65,035.26 is: 89,764.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,231.18 : 112,119.33 = 65,035.26 : x
  2. Step 2: Convert to fraction form
    81,231.18/112,119.33 = 65,035.26/x
  3. Step 3: Cross multiply
    81,231.18x = 112,119.33 × 65,035.26
  4. Step 4: Simplify right side
    81,231.18x = 7,291,709,777.58
  5. Step 5: Solve for x
    x = 7,291,709,777.58/81,231.18
  6. Step 6: Final answer
    x = 89,764.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.