Home / 75,015.20-112,436.40-30,612.80

Finding the Fourth Proportional to 75,015.20, 112,436.40 and 30,612.80

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Solution

The fourth proportional to 75,015.20, 112,436.40 and 30,612.80 is: 45,883.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,015.20 : 112,436.40 = 30,612.80 : x
  2. Step 2: Convert to fraction form
    75,015.20/112,436.40 = 30,612.80/x
  3. Step 3: Cross multiply
    75,015.20x = 112,436.40 × 30,612.80
  4. Step 4: Simplify right side
    75,015.20x = 3,441,993,025.92
  5. Step 5: Solve for x
    x = 3,441,993,025.92/75,015.20
  6. Step 6: Final answer
    x = 45,883.94

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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.