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Finding the Fourth Proportional to 60,209.01, 90,331.34 and 20,770.11

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Solution

The fourth proportional to 60,209.01, 90,331.34 and 20,770.11 is: 31,161.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,209.01 : 90,331.34 = 20,770.11 : x
  2. Step 2: Convert to fraction form
    60,209.01/90,331.34 = 20,770.11/x
  3. Step 3: Cross multiply
    60,209.01x = 90,331.34 × 20,770.11
  4. Step 4: Simplify right side
    60,209.01x = 1,876,191,764.40
  5. Step 5: Solve for x
    x = 1,876,191,764.40/60,209.01
  6. Step 6: Final answer
    x = 31,161.31

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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.