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Finding the Fourth Proportional to 67,749.50, 101,620.40 and 20,363.64

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Solution

The fourth proportional to 67,749.50, 101,620.40 and 20,363.64 is: 30,544.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,749.50 : 101,620.40 = 20,363.64 : x
  2. Step 2: Convert to fraction form
    67,749.50/101,620.40 = 20,363.64/x
  3. Step 3: Cross multiply
    67,749.50x = 101,620.40 × 20,363.64
  4. Step 4: Simplify right side
    67,749.50x = 2,069,361,242.26
  5. Step 5: Solve for x
    x = 2,069,361,242.26/67,749.50
  6. Step 6: Final answer
    x = 30,544.30

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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.