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Finding the Fourth Proportional to 65,969.66, 99,086.84 and 39,367.54

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Solution

The fourth proportional to 65,969.66, 99,086.84 and 39,367.54 is: 59,130.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,969.66 : 99,086.84 = 39,367.54 : x
  2. Step 2: Convert to fraction form
    65,969.66/99,086.84 = 39,367.54/x
  3. Step 3: Cross multiply
    65,969.66x = 99,086.84 × 39,367.54
  4. Step 4: Simplify right side
    65,969.66x = 3,900,805,137.17
  5. Step 5: Solve for x
    x = 3,900,805,137.17/65,969.66
  6. Step 6: Final answer
    x = 59,130.29

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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.