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Finding the Fourth Proportional to 56,620.92, 78,134.96 and 31,469.88

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Solution

The fourth proportional to 56,620.92, 78,134.96 and 31,469.88 is: 43,427.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,620.92 : 78,134.96 = 31,469.88 : x
  2. Step 2: Convert to fraction form
    56,620.92/78,134.96 = 31,469.88/x
  3. Step 3: Cross multiply
    56,620.92x = 78,134.96 × 31,469.88
  4. Step 4: Simplify right side
    56,620.92x = 2,458,897,815.00
  5. Step 5: Solve for x
    x = 2,458,897,815.00/56,620.92
  6. Step 6: Final answer
    x = 43,427.37

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1.5x scale

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.