Home / 80,754.53-121,180.81-30,190.37

Finding the Fourth Proportional to 80,754.53, 121,180.81 and 30,190.37

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Solution

The fourth proportional to 80,754.53, 121,180.81 and 30,190.37 is: 45,303.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,754.53 : 121,180.81 = 30,190.37 : x
  2. Step 2: Convert to fraction form
    80,754.53/121,180.81 = 30,190.37/x
  3. Step 3: Cross multiply
    80,754.53x = 121,180.81 × 30,190.37
  4. Step 4: Simplify right side
    80,754.53x = 3,658,493,547.67
  5. Step 5: Solve for x
    x = 3,658,493,547.67/80,754.53
  6. Step 6: Final answer
    x = 45,303.88

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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.