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Finding the Fourth Proportional to 56,372.81, 84,561.27 and 18,934.11

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Solution

The fourth proportional to 56,372.81, 84,561.27 and 18,934.11 is: 28,401.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,372.81 : 84,561.27 = 18,934.11 : x
  2. Step 2: Convert to fraction form
    56,372.81/84,561.27 = 18,934.11/x
  3. Step 3: Cross multiply
    56,372.81x = 84,561.27 × 18,934.11
  4. Step 4: Simplify right side
    56,372.81x = 1,601,092,293.25
  5. Step 5: Solve for x
    x = 1,601,092,293.25/56,372.81
  6. Step 6: Final answer
    x = 28,401.86

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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.