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Finding the Fourth Proportional to 60,221.56, 90,331.52 and 18,668.56

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Solution

The fourth proportional to 60,221.56, 90,331.52 and 18,668.56 is: 28,002.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,221.56 : 90,331.52 = 18,668.56 : x
  2. Step 2: Convert to fraction form
    60,221.56/90,331.52 = 18,668.56/x
  3. Step 3: Cross multiply
    60,221.56x = 90,331.52 × 18,668.56
  4. Step 4: Simplify right side
    60,221.56x = 1,686,359,401.01
  5. Step 5: Solve for x
    x = 1,686,359,401.01/60,221.56
  6. Step 6: Final answer
    x = 28,002.59

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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.