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Finding the Fourth Proportional to 82,395.20, 123,592.80 and 26,991.20

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Solution

The fourth proportional to 82,395.20, 123,592.80 and 26,991.20 is: 40,486.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,395.20 : 123,592.80 = 26,991.20 : x
  2. Step 2: Convert to fraction form
    82,395.20/123,592.80 = 26,991.20/x
  3. Step 3: Cross multiply
    82,395.20x = 123,592.80 × 26,991.20
  4. Step 4: Simplify right side
    82,395.20x = 3,335,917,983.36
  5. Step 5: Solve for x
    x = 3,335,917,983.36/82,395.20
  6. Step 6: Final answer
    x = 40,486.80

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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.