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Finding the Fourth Proportional to 44,206.80, 66,331.80 and 20,829.20

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Solution

The fourth proportional to 44,206.80, 66,331.80 and 20,829.20 is: 31,253.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,206.80 : 66,331.80 = 20,829.20 : x
  2. Step 2: Convert to fraction form
    44,206.80/66,331.80 = 20,829.20/x
  3. Step 3: Cross multiply
    44,206.80x = 66,331.80 × 20,829.20
  4. Step 4: Simplify right side
    44,206.80x = 1,381,638,328.56
  5. Step 5: Solve for x
    x = 1,381,638,328.56/44,206.80
  6. Step 6: Final answer
    x = 31,253.98

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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.