Home / 56,910.60-78,540.26-31,760.10

Finding the Fourth Proportional to 56,910.60, 78,540.26 and 31,760.10

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Solution

The fourth proportional to 56,910.60, 78,540.26 and 31,760.10 is: 43,830.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,910.60 : 78,540.26 = 31,760.10 : x
  2. Step 2: Convert to fraction form
    56,910.60/78,540.26 = 31,760.10/x
  3. Step 3: Cross multiply
    56,910.60x = 78,540.26 × 31,760.10
  4. Step 4: Simplify right side
    56,910.60x = 2,494,446,511.63
  5. Step 5: Solve for x
    x = 2,494,446,511.63/56,910.60
  6. Step 6: Final answer
    x = 43,830.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.