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Finding the Fourth Proportional to 56,351.78, 84,541.72 and 16,909.62

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Solution

The fourth proportional to 56,351.78, 84,541.72 and 16,909.62 is: 25,368.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,351.78 : 84,541.72 = 16,909.62 : x
  2. Step 2: Convert to fraction form
    56,351.78/84,541.72 = 16,909.62/x
  3. Step 3: Cross multiply
    56,351.78x = 84,541.72 × 16,909.62
  4. Step 4: Simplify right side
    56,351.78x = 1,429,568,359.35
  5. Step 5: Solve for x
    x = 1,429,568,359.35/56,351.78
  6. Step 6: Final answer
    x = 25,368.65

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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.