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Finding the Fourth Proportional to 66,143.66, 91,241.90 and 41,900.23

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Solution

The fourth proportional to 66,143.66, 91,241.90 and 41,900.23 is: 57,799.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,143.66 : 91,241.90 = 41,900.23 : x
  2. Step 2: Convert to fraction form
    66,143.66/91,241.90 = 41,900.23/x
  3. Step 3: Cross multiply
    66,143.66x = 91,241.90 × 41,900.23
  4. Step 4: Simplify right side
    66,143.66x = 3,823,056,315.16
  5. Step 5: Solve for x
    x = 3,823,056,315.16/66,143.66
  6. Step 6: Final answer
    x = 57,799.28

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1.5x scale

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.