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Finding the Fourth Proportional to 66,344.48, 99,523.20 and 21,960.80

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Solution

The fourth proportional to 66,344.48, 99,523.20 and 21,960.80 is: 32,943.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,344.48 : 99,523.20 = 21,960.80 : x
  2. Step 2: Convert to fraction form
    66,344.48/99,523.20 = 21,960.80/x
  3. Step 3: Cross multiply
    66,344.48x = 99,523.20 × 21,960.80
  4. Step 4: Simplify right side
    66,344.48x = 2,185,609,090.56
  5. Step 5: Solve for x
    x = 2,185,609,090.56/66,344.48
  6. Step 6: Final answer
    x = 32,943.34

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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.