Home / 80,819.36-121,229.03-30,904.50

Finding the Fourth Proportional to 80,819.36, 121,229.03 and 30,904.50

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Solution

The fourth proportional to 80,819.36, 121,229.03 and 30,904.50 is: 46,356.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,819.36 : 121,229.03 = 30,904.50 : x
  2. Step 2: Convert to fraction form
    80,819.36/121,229.03 = 30,904.50/x
  3. Step 3: Cross multiply
    80,819.36x = 121,229.03 × 30,904.50
  4. Step 4: Simplify right side
    80,819.36x = 3,746,522,403.11
  5. Step 5: Solve for x
    x = 3,746,522,403.11/80,819.36
  6. Step 6: Final answer
    x = 46,356.75

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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.