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Finding the Fourth Proportional to 69,689.51, 96,164.85 and 39,469.02

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Solution

The fourth proportional to 69,689.51, 96,164.85 and 39,469.02 is: 54,463.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,689.51 : 96,164.85 = 39,469.02 : x
  2. Step 2: Convert to fraction form
    69,689.51/96,164.85 = 39,469.02/x
  3. Step 3: Cross multiply
    69,689.51x = 96,164.85 × 39,469.02
  4. Step 4: Simplify right side
    69,689.51x = 3,795,532,387.95
  5. Step 5: Solve for x
    x = 3,795,532,387.95/69,689.51
  6. Step 6: Final answer
    x = 54,463.47

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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.