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Finding the Fourth Proportional to 57,750.75, 79,696.04 and 31,254.75

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Solution

The fourth proportional to 57,750.75, 79,696.04 and 31,254.75 is: 43,131.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,750.75 : 79,696.04 = 31,254.75 : x
  2. Step 2: Convert to fraction form
    57,750.75/79,696.04 = 31,254.75/x
  3. Step 3: Cross multiply
    57,750.75x = 79,696.04 × 31,254.75
  4. Step 4: Simplify right side
    57,750.75x = 2,490,879,649.92
  5. Step 5: Solve for x
    x = 2,490,879,649.92/57,750.75
  6. Step 6: Final answer
    x = 43,131.56

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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.