Home / 80,782.31-121,189.87-34,035.19

Finding the Fourth Proportional to 80,782.31, 121,189.87 and 34,035.19

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Solution

The fourth proportional to 80,782.31, 121,189.87 and 34,035.19 is: 51,059.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,782.31 : 121,189.87 = 34,035.19 : x
  2. Step 2: Convert to fraction form
    80,782.31/121,189.87 = 34,035.19/x
  3. Step 3: Cross multiply
    80,782.31x = 121,189.87 × 34,035.19
  4. Step 4: Simplify right side
    80,782.31x = 4,124,719,991.09
  5. Step 5: Solve for x
    x = 4,124,719,991.09/80,782.31
  6. Step 6: Final answer
    x = 51,059.69

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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.