Home / 81,286.23-121,771.59-59,900.14

Finding the Fourth Proportional to 81,286.23, 121,771.59 and 59,900.14

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Solution

The fourth proportional to 81,286.23, 121,771.59 and 59,900.14 is: 89,733.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,286.23 : 121,771.59 = 59,900.14 : x
  2. Step 2: Convert to fraction form
    81,286.23/121,771.59 = 59,900.14/x
  3. Step 3: Cross multiply
    81,286.23x = 121,771.59 × 59,900.14
  4. Step 4: Simplify right side
    81,286.23x = 7,294,135,289.02
  5. Step 5: Solve for x
    x = 7,294,135,289.02/81,286.23
  6. Step 6: Final answer
    x = 89,733.96

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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.