Home / 80,254.36-120,315.84-30,306.12

Finding the Fourth Proportional to 80,254.36, 120,315.84 and 30,306.12

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Solution

The fourth proportional to 80,254.36, 120,315.84 and 30,306.12 is: 45,434.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,254.36 : 120,315.84 = 30,306.12 : x
  2. Step 2: Convert to fraction form
    80,254.36/120,315.84 = 30,306.12/x
  3. Step 3: Cross multiply
    80,254.36x = 120,315.84 × 30,306.12
  4. Step 4: Simplify right side
    80,254.36x = 3,646,306,284.94
  5. Step 5: Solve for x
    x = 3,646,306,284.94/80,254.36
  6. Step 6: Final answer
    x = 45,434.37

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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.