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Finding the Fourth Proportional to 66,352.56, 99,542.88 and 21,976.80

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Solution

The fourth proportional to 66,352.56, 99,542.88 and 21,976.80 is: 32,969.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,352.56 : 99,542.88 = 21,976.80 : x
  2. Step 2: Convert to fraction form
    66,352.56/99,542.88 = 21,976.80/x
  3. Step 3: Cross multiply
    66,352.56x = 99,542.88 × 21,976.80
  4. Step 4: Simplify right side
    66,352.56x = 2,187,633,965.18
  5. Step 5: Solve for x
    x = 2,187,633,965.18/66,352.56
  6. Step 6: Final answer
    x = 32,969.85

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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.