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Finding the Fourth Proportional to 66,612.46, 99,967.97 and 31,552.20

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Solution

The fourth proportional to 66,612.46, 99,967.97 and 31,552.20 is: 47,351.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,612.46 : 99,967.97 = 31,552.20 : x
  2. Step 2: Convert to fraction form
    66,612.46/99,967.97 = 31,552.20/x
  3. Step 3: Cross multiply
    66,612.46x = 99,967.97 × 31,552.20
  4. Step 4: Simplify right side
    66,612.46x = 3,154,208,725.43
  5. Step 5: Solve for x
    x = 3,154,208,725.43/66,612.46
  6. Step 6: Final answer
    x = 47,351.63

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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.