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Finding the Fourth Proportional to 65,989.11, 91,041.11 and 43,340.37

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Solution

The fourth proportional to 65,989.11, 91,041.11 and 43,340.37 is: 59,794.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,989.11 : 91,041.11 = 43,340.37 : x
  2. Step 2: Convert to fraction form
    65,989.11/91,041.11 = 43,340.37/x
  3. Step 3: Cross multiply
    65,989.11x = 91,041.11 × 43,340.37
  4. Step 4: Simplify right side
    65,989.11x = 3,945,755,175.91
  5. Step 5: Solve for x
    x = 3,945,755,175.91/65,989.11
  6. Step 6: Final answer
    x = 59,794.04

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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.