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Finding the Fourth Proportional to 69,871.66, 96,418.02 and 39,657.59

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Solution

The fourth proportional to 69,871.66, 96,418.02 and 39,657.59 is: 54,724.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,871.66 : 96,418.02 = 39,657.59 : x
  2. Step 2: Convert to fraction form
    69,871.66/96,418.02 = 39,657.59/x
  3. Step 3: Cross multiply
    69,871.66x = 96,418.02 × 39,657.59
  4. Step 4: Simplify right side
    69,871.66x = 3,823,706,206.63
  5. Step 5: Solve for x
    x = 3,823,706,206.63/69,871.66
  6. Step 6: Final answer
    x = 54,724.71

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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.