Home / 83,561.26-125,448.75-71,790.34

Finding the Fourth Proportional to 83,561.26, 125,448.75 and 71,790.34

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Solution

The fourth proportional to 83,561.26, 125,448.75 and 71,790.34 is: 107,777.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,561.26 : 125,448.75 = 71,790.34 : x
  2. Step 2: Convert to fraction form
    83,561.26/125,448.75 = 71,790.34/x
  3. Step 3: Cross multiply
    83,561.26x = 125,448.75 × 71,790.34
  4. Step 4: Simplify right side
    83,561.26x = 9,006,008,415.08
  5. Step 5: Solve for x
    x = 9,006,008,415.08/83,561.26
  6. Step 6: Final answer
    x = 107,777.32

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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.