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Finding the Fourth Proportional to 56,891.48, 85,321.40 and 16,919.19

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Solution

The fourth proportional to 56,891.48, 85,321.40 and 16,919.19 is: 25,374.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,891.48 : 85,321.40 = 16,919.19 : x
  2. Step 2: Convert to fraction form
    56,891.48/85,321.40 = 16,919.19/x
  3. Step 3: Cross multiply
    56,891.48x = 85,321.40 × 16,919.19
  4. Step 4: Simplify right side
    56,891.48x = 1,443,568,893.07
  5. Step 5: Solve for x
    x = 1,443,568,893.07/56,891.48
  6. Step 6: Final answer
    x = 25,374.08

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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.