Home / 80,721.95-121,081.70-36,317.34

Finding the Fourth Proportional to 80,721.95, 121,081.70 and 36,317.34

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Solution

The fourth proportional to 80,721.95, 121,081.70 and 36,317.34 is: 54,475.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,721.95 : 121,081.70 = 36,317.34 : x
  2. Step 2: Convert to fraction form
    80,721.95/121,081.70 = 36,317.34/x
  3. Step 3: Cross multiply
    80,721.95x = 121,081.70 × 36,317.34
  4. Step 4: Simplify right side
    80,721.95x = 4,397,365,266.68
  5. Step 5: Solve for x
    x = 4,397,365,266.68/80,721.95
  6. Step 6: Final answer
    x = 54,475.46

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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.