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Finding the Fourth Proportional to 67,572.56, 101,370.36 and 20,824.40

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Solution

The fourth proportional to 67,572.56, 101,370.36 and 20,824.40 is: 31,240.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,572.56 : 101,370.36 = 20,824.40 : x
  2. Step 2: Convert to fraction form
    67,572.56/101,370.36 = 20,824.40/x
  3. Step 3: Cross multiply
    67,572.56x = 101,370.36 × 20,824.40
  4. Step 4: Simplify right side
    67,572.56x = 2,110,976,924.78
  5. Step 5: Solve for x
    x = 2,110,976,924.78/67,572.56
  6. Step 6: Final answer
    x = 31,240.15

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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.