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Finding the Fourth Proportional to 57,887.67, 86,829.89 and 18,447.15

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Solution

The fourth proportional to 57,887.67, 86,829.89 and 18,447.15 is: 27,670.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,887.67 : 86,829.89 = 18,447.15 : x
  2. Step 2: Convert to fraction form
    57,887.67/86,829.89 = 18,447.15/x
  3. Step 3: Cross multiply
    57,887.67x = 86,829.89 × 18,447.15
  4. Step 4: Simplify right side
    57,887.67x = 1,601,763,913.08
  5. Step 5: Solve for x
    x = 1,601,763,913.08/57,887.67
  6. Step 6: Final answer
    x = 27,670.21

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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.