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Finding the Fourth Proportional to 66,955.52, 100,449.52 and 20,205.60

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Solution

The fourth proportional to 66,955.52, 100,449.52 and 20,205.60 is: 30,313.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,955.52 : 100,449.52 = 20,205.60 : x
  2. Step 2: Convert to fraction form
    66,955.52/100,449.52 = 20,205.60/x
  3. Step 3: Cross multiply
    66,955.52x = 100,449.52 × 20,205.60
  4. Step 4: Simplify right side
    66,955.52x = 2,029,642,821.31
  5. Step 5: Solve for x
    x = 2,029,642,821.31/66,955.52
  6. Step 6: Final answer
    x = 30,313.30

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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.