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Finding the Fourth Proportional to 55,278.20, 82,917.30 and 18,342.20

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Solution

The fourth proportional to 55,278.20, 82,917.30 and 18,342.20 is: 27,513.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,278.20 : 82,917.30 = 18,342.20 : x
  2. Step 2: Convert to fraction form
    55,278.20/82,917.30 = 18,342.20/x
  3. Step 3: Cross multiply
    55,278.20x = 82,917.30 × 18,342.20
  4. Step 4: Simplify right side
    55,278.20x = 1,520,885,700.06
  5. Step 5: Solve for x
    x = 1,520,885,700.06/55,278.20
  6. Step 6: Final answer
    x = 27,513.30

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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.