Home / 80,049.03-120,073.54-30,140.32

Finding the Fourth Proportional to 80,049.03, 120,073.54 and 30,140.32

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Solution

The fourth proportional to 80,049.03, 120,073.54 and 30,140.32 is: 45,210.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,049.03 : 120,073.54 = 30,140.32 : x
  2. Step 2: Convert to fraction form
    80,049.03/120,073.54 = 30,140.32/x
  3. Step 3: Cross multiply
    80,049.03x = 120,073.54 × 30,140.32
  4. Step 4: Simplify right side
    80,049.03x = 3,619,054,919.13
  5. Step 5: Solve for x
    x = 3,619,054,919.13/80,049.03
  6. Step 6: Final answer
    x = 45,210.48

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1.5x scale

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.