Home / 80,726.02-121,087.68-36,321.34

Finding the Fourth Proportional to 80,726.02, 121,087.68 and 36,321.34

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Solution

The fourth proportional to 80,726.02, 121,087.68 and 36,321.34 is: 54,481.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,726.02 : 121,087.68 = 36,321.34 : x
  2. Step 2: Convert to fraction form
    80,726.02/121,087.68 = 36,321.34/x
  3. Step 3: Cross multiply
    80,726.02x = 121,087.68 × 36,321.34
  4. Step 4: Simplify right side
    80,726.02x = 4,398,066,795.09
  5. Step 5: Solve for x
    x = 4,398,066,795.09/80,726.02
  6. Step 6: Final answer
    x = 54,481.40

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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.