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Finding the Fourth Proportional to 67,100.80, 100,651.44 and 20,354.08

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Solution

The fourth proportional to 67,100.80, 100,651.44 and 20,354.08 is: 30,531.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,100.80 : 100,651.44 = 20,354.08 : x
  2. Step 2: Convert to fraction form
    67,100.80/100,651.44 = 20,354.08/x
  3. Step 3: Cross multiply
    67,100.80x = 100,651.44 × 20,354.08
  4. Step 4: Simplify right side
    67,100.80x = 2,048,667,461.88
  5. Step 5: Solve for x
    x = 2,048,667,461.88/67,100.80
  6. Step 6: Final answer
    x = 30,531.19

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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.