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Finding the Fourth Proportional to 55,151.91, 82,687.53 and 17,690.66

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Solution

The fourth proportional to 55,151.91, 82,687.53 and 17,690.66 is: 26,523.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,151.91 : 82,687.53 = 17,690.66 : x
  2. Step 2: Convert to fraction form
    55,151.91/82,687.53 = 17,690.66/x
  3. Step 3: Cross multiply
    55,151.91x = 82,687.53 × 17,690.66
  4. Step 4: Simplify right side
    55,151.91x = 1,462,796,979.47
  5. Step 5: Solve for x
    x = 1,462,796,979.47/55,151.91
  6. Step 6: Final answer
    x = 26,523.05

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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.