Home / 80,917.48-121,216.02-38,164.36

Finding the Fourth Proportional to 80,917.48, 121,216.02 and 38,164.36

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Solution

The fourth proportional to 80,917.48, 121,216.02 and 38,164.36 is: 57,170.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,917.48 : 121,216.02 = 38,164.36 : x
  2. Step 2: Convert to fraction form
    80,917.48/121,216.02 = 38,164.36/x
  3. Step 3: Cross multiply
    80,917.48x = 121,216.02 × 38,164.36
  4. Step 4: Simplify right side
    80,917.48x = 4,626,131,825.05
  5. Step 5: Solve for x
    x = 4,626,131,825.05/80,917.48
  6. Step 6: Final answer
    x = 57,170.98

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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.