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Finding the Fourth Proportional to 69,142.40, 103,640.70 and 27,006.20

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Solution

The fourth proportional to 69,142.40, 103,640.70 and 27,006.20 is: 40,480.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,142.40 : 103,640.70 = 27,006.20 : x
  2. Step 2: Convert to fraction form
    69,142.40/103,640.70 = 27,006.20/x
  3. Step 3: Cross multiply
    69,142.40x = 103,640.70 × 27,006.20
  4. Step 4: Simplify right side
    69,142.40x = 2,798,941,472.34
  5. Step 5: Solve for x
    x = 2,798,941,472.34/69,142.40
  6. Step 6: Final answer
    x = 40,480.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.