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Finding the Fourth Proportional to 69,668.88, 96,139.94 and 39,453.56

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Solution

The fourth proportional to 69,668.88, 96,139.94 and 39,453.56 is: 54,444.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,668.88 : 96,139.94 = 39,453.56 : x
  2. Step 2: Convert to fraction form
    69,668.88/96,139.94 = 39,453.56/x
  3. Step 3: Cross multiply
    69,668.88x = 96,139.94 × 39,453.56
  4. Step 4: Simplify right side
    69,668.88x = 3,793,062,891.19
  5. Step 5: Solve for x
    x = 3,793,062,891.19/69,668.88
  6. Step 6: Final answer
    x = 54,444.15

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1.5x scale

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.