Home / 66,941.40-100,409.52-20,193

Finding the Fourth Proportional to 66,941.40, 100,409.52 and 20,193

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Solution

The fourth proportional to 66,941.40, 100,409.52 and 20,193 is: 30,288.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,941.40 : 100,409.52 = 20,193 : x
  2. Step 2: Convert to fraction form
    66,941.40/100,409.52 = 20,193/x
  3. Step 3: Cross multiply
    66,941.40x = 100,409.52 × 20,193
  4. Step 4: Simplify right side
    66,941.40x = 2,027,569,437.36
  5. Step 5: Solve for x
    x = 2,027,569,437.36/66,941.40
  6. Step 6: Final answer
    x = 30,288.72

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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.