Home / 66,960.08-100,440.84-20,213.36

Finding the Fourth Proportional to 66,960.08, 100,440.84 and 20,213.36

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Solution

The fourth proportional to 66,960.08, 100,440.84 and 20,213.36 is: 30,320.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,960.08 : 100,440.84 = 20,213.36 : x
  2. Step 2: Convert to fraction form
    66,960.08/100,440.84 = 20,213.36/x
  3. Step 3: Cross multiply
    66,960.08x = 100,440.84 × 20,213.36
  4. Step 4: Simplify right side
    66,960.08x = 2,030,246,857.62
  5. Step 5: Solve for x
    x = 2,030,246,857.62/66,960.08
  6. Step 6: Final answer
    x = 30,320.26

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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.