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Finding the Fourth Proportional to 57,493.75, 86,240.63 and 15,940.75

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Solution

The fourth proportional to 57,493.75, 86,240.63 and 15,940.75 is: 23,911.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,493.75 : 86,240.63 = 15,940.75 : x
  2. Step 2: Convert to fraction form
    57,493.75/86,240.63 = 15,940.75/x
  3. Step 3: Cross multiply
    57,493.75x = 86,240.63 × 15,940.75
  4. Step 4: Simplify right side
    57,493.75x = 1,374,740,322.67
  5. Step 5: Solve for x
    x = 1,374,740,322.67/57,493.75
  6. Step 6: Final answer
    x = 23,911.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.