Home / 80,912.48-121,208.52-38,159.36

Finding the Fourth Proportional to 80,912.48, 121,208.52 and 38,159.36

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Solution

The fourth proportional to 80,912.48, 121,208.52 and 38,159.36 is: 57,163.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,912.48 : 121,208.52 = 38,159.36 : x
  2. Step 2: Convert to fraction form
    80,912.48/121,208.52 = 38,159.36/x
  3. Step 3: Cross multiply
    80,912.48x = 121,208.52 × 38,159.36
  4. Step 4: Simplify right side
    80,912.48x = 4,625,239,549.75
  5. Step 5: Solve for x
    x = 4,625,239,549.75/80,912.48
  6. Step 6: Final answer
    x = 57,163.49

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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.