Home / 56,940.10-78,577.34-31,789.60

Finding the Fourth Proportional to 56,940.10, 78,577.34 and 31,789.60

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Solution

The fourth proportional to 56,940.10, 78,577.34 and 31,789.60 is: 43,869.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,940.10 : 78,577.34 = 31,789.60 : x
  2. Step 2: Convert to fraction form
    56,940.10/78,577.34 = 31,789.60/x
  3. Step 3: Cross multiply
    56,940.10x = 78,577.34 × 31,789.60
  4. Step 4: Simplify right side
    56,940.10x = 2,497,942,207.66
  5. Step 5: Solve for x
    x = 2,497,942,207.66/56,940.10
  6. Step 6: Final answer
    x = 43,869.65

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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.