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Finding the Fourth Proportional to 66,154.70, 91,291.38 and 37,859.78

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Solution

The fourth proportional to 66,154.70, 91,291.38 and 37,859.78 is: 52,245.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,154.70 : 91,291.38 = 37,859.78 : x
  2. Step 2: Convert to fraction form
    66,154.70/91,291.38 = 37,859.78/x
  3. Step 3: Cross multiply
    66,154.70x = 91,291.38 × 37,859.78
  4. Step 4: Simplify right side
    66,154.70x = 3,456,271,562.70
  5. Step 5: Solve for x
    x = 3,456,271,562.70/66,154.70
  6. Step 6: Final answer
    x = 52,245.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.