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Finding the Fourth Proportional to 66,086.49, 91,199.44 and 35,871.81

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Solution

The fourth proportional to 66,086.49, 91,199.44 and 35,871.81 is: 49,503.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,086.49 : 91,199.44 = 35,871.81 : x
  2. Step 2: Convert to fraction form
    66,086.49/91,199.44 = 35,871.81/x
  3. Step 3: Cross multiply
    66,086.49x = 91,199.44 × 35,871.81
  4. Step 4: Simplify right side
    66,086.49x = 3,271,488,983.79
  5. Step 5: Solve for x
    x = 3,271,488,983.79/66,086.49
  6. Step 6: Final answer
    x = 49,503.14

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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.