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Finding the Fourth Proportional to 60,221.72, 90,334.07 and 20,241.30

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Solution

The fourth proportional to 60,221.72, 90,334.07 and 20,241.30 is: 30,362.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,221.72 : 90,334.07 = 20,241.30 : x
  2. Step 2: Convert to fraction form
    60,221.72/90,334.07 = 20,241.30/x
  3. Step 3: Cross multiply
    60,221.72x = 90,334.07 × 20,241.30
  4. Step 4: Simplify right side
    60,221.72x = 1,828,479,011.09
  5. Step 5: Solve for x
    x = 1,828,479,011.09/60,221.72
  6. Step 6: Final answer
    x = 30,362.45

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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.