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Finding the Fourth Proportional to 56,910.88, 85,308 and 21,841.12

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Solution

The fourth proportional to 56,910.88, 85,308 and 21,841.12 is: 32,739.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,910.88 : 85,308 = 21,841.12 : x
  2. Step 2: Convert to fraction form
    56,910.88/85,308 = 21,841.12/x
  3. Step 3: Cross multiply
    56,910.88x = 85,308 × 21,841.12
  4. Step 4: Simplify right side
    56,910.88x = 1,863,222,264.96
  5. Step 5: Solve for x
    x = 1,863,222,264.96/56,910.88
  6. Step 6: Final answer
    x = 32,739.30

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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.