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Finding the Fourth Proportional to 82,369.20, 123,553.80 and 49,126.80

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Solution

The fourth proportional to 82,369.20, 123,553.80 and 49,126.80 is: 73,690.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,369.20 : 123,553.80 = 49,126.80 : x
  2. Step 2: Convert to fraction form
    82,369.20/123,553.80 = 49,126.80/x
  3. Step 3: Cross multiply
    82,369.20x = 123,553.80 × 49,126.80
  4. Step 4: Simplify right side
    82,369.20x = 6,069,802,821.84
  5. Step 5: Solve for x
    x = 6,069,802,821.84/82,369.20
  6. Step 6: Final answer
    x = 73,690.20

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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.