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Finding the Fourth Proportional to 57,245.94, 78,993.77 and 31,751.87

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Solution

The fourth proportional to 57,245.94, 78,993.77 and 31,751.87 is: 43,814.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,245.94 : 78,993.77 = 31,751.87 : x
  2. Step 2: Convert to fraction form
    57,245.94/78,993.77 = 31,751.87/x
  3. Step 3: Cross multiply
    57,245.94x = 78,993.77 × 31,751.87
  4. Step 4: Simplify right side
    57,245.94x = 2,508,199,362.12
  5. Step 5: Solve for x
    x = 2,508,199,362.12/57,245.94
  6. Step 6: Final answer
    x = 43,814.45

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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.