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Finding the Fourth Proportional to 69,759.52, 103,982.12 and 64,160.80

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Solution

The fourth proportional to 69,759.52, 103,982.12 and 64,160.80 is: 95,636.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,759.52 : 103,982.12 = 64,160.80 : x
  2. Step 2: Convert to fraction form
    69,759.52/103,982.12 = 64,160.80/x
  3. Step 3: Cross multiply
    69,759.52x = 103,982.12 × 64,160.80
  4. Step 4: Simplify right side
    69,759.52x = 6,671,576,004.90
  5. Step 5: Solve for x
    x = 6,671,576,004.90/69,759.52
  6. Step 6: Final answer
    x = 95,636.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.