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Finding the Fourth Proportional to 57,492.75, 86,239.13 and 15,939.75

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Solution

The fourth proportional to 57,492.75, 86,239.13 and 15,939.75 is: 23,909.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,492.75 : 86,239.13 = 15,939.75 : x
  2. Step 2: Convert to fraction form
    57,492.75/86,239.13 = 15,939.75/x
  3. Step 3: Cross multiply
    57,492.75x = 86,239.13 × 15,939.75
  4. Step 4: Simplify right side
    57,492.75x = 1,374,630,172.42
  5. Step 5: Solve for x
    x = 1,374,630,172.42/57,492.75
  6. Step 6: Final answer
    x = 23,909.63

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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.