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Finding the Fourth Proportional to 56,502.92, 84,721.56 and 21,423.44

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Solution

The fourth proportional to 56,502.92, 84,721.56 and 21,423.44 is: 32,122.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,502.92 : 84,721.56 = 21,423.44 : x
  2. Step 2: Convert to fraction form
    56,502.92/84,721.56 = 21,423.44/x
  3. Step 3: Cross multiply
    56,502.92x = 84,721.56 × 21,423.44
  4. Step 4: Simplify right side
    56,502.92x = 1,815,027,257.37
  5. Step 5: Solve for x
    x = 1,815,027,257.37/56,502.92
  6. Step 6: Final answer
    x = 32,122.72

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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.