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Finding the Fourth Proportional to 66,600.34, 99,949.80 and 31,540.08

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Solution

The fourth proportional to 66,600.34, 99,949.80 and 31,540.08 is: 47,333.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,600.34 : 99,949.80 = 31,540.08 : x
  2. Step 2: Convert to fraction form
    66,600.34/99,949.80 = 31,540.08/x
  3. Step 3: Cross multiply
    66,600.34x = 99,949.80 × 31,540.08
  4. Step 4: Simplify right side
    66,600.34x = 3,152,424,687.98
  5. Step 5: Solve for x
    x = 3,152,424,687.98/66,600.34
  6. Step 6: Final answer
    x = 47,333.46

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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.