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Finding the Fourth Proportional to 69,987.71, 96,584.50 and 39,361.40

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Solution

The fourth proportional to 69,987.71, 96,584.50 and 39,361.40 is: 54,319.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,987.71 : 96,584.50 = 39,361.40 : x
  2. Step 2: Convert to fraction form
    69,987.71/96,584.50 = 39,361.40/x
  3. Step 3: Cross multiply
    69,987.71x = 96,584.50 × 39,361.40
  4. Step 4: Simplify right side
    69,987.71x = 3,801,700,556.97
  5. Step 5: Solve for x
    x = 3,801,700,556.97/69,987.71
  6. Step 6: Final answer
    x = 54,319.54

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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.