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Finding the Fourth Proportional to 55,872.60, 83,784.60 and 18,418.20

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Solution

The fourth proportional to 55,872.60, 83,784.60 and 18,418.20 is: 27,619.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,872.60 : 83,784.60 = 18,418.20 : x
  2. Step 2: Convert to fraction form
    55,872.60/83,784.60 = 18,418.20/x
  3. Step 3: Cross multiply
    55,872.60x = 83,784.60 × 18,418.20
  4. Step 4: Simplify right side
    55,872.60x = 1,543,161,519.72
  5. Step 5: Solve for x
    x = 1,543,161,519.72/55,872.60
  6. Step 6: Final answer
    x = 27,619.29

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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.