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Finding the Fourth Proportional to 56,339.88, 84,484.26 and 21,254.64

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Solution

The fourth proportional to 56,339.88, 84,484.26 and 21,254.64 is: 31,872.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,339.88 : 84,484.26 = 21,254.64 : x
  2. Step 2: Convert to fraction form
    56,339.88/84,484.26 = 21,254.64/x
  3. Step 3: Cross multiply
    56,339.88x = 84,484.26 × 21,254.64
  4. Step 4: Simplify right side
    56,339.88x = 1,795,682,531.97
  5. Step 5: Solve for x
    x = 1,795,682,531.97/56,339.88
  6. Step 6: Final answer
    x = 31,872.32

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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.