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Finding the Fourth Proportional to 73,218.20, 109,827.30 and 17,814.20

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Solution

The fourth proportional to 73,218.20, 109,827.30 and 17,814.20 is: 26,721.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,218.20 : 109,827.30 = 17,814.20 : x
  2. Step 2: Convert to fraction form
    73,218.20/109,827.30 = 17,814.20/x
  3. Step 3: Cross multiply
    73,218.20x = 109,827.30 × 17,814.20
  4. Step 4: Simplify right side
    73,218.20x = 1,956,485,487.66
  5. Step 5: Solve for x
    x = 1,956,485,487.66/73,218.20
  6. Step 6: Final answer
    x = 26,721.30

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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.