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Finding the Fourth Proportional to 57,656.70, 86,497.20 and 18,217.80

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Solution

The fourth proportional to 57,656.70, 86,497.20 and 18,217.80 is: 27,330.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,656.70 : 86,497.20 = 18,217.80 : x
  2. Step 2: Convert to fraction form
    57,656.70/86,497.20 = 18,217.80/x
  3. Step 3: Cross multiply
    57,656.70x = 86,497.20 × 18,217.80
  4. Step 4: Simplify right side
    57,656.70x = 1,575,788,690.16
  5. Step 5: Solve for x
    x = 1,575,788,690.16/57,656.70
  6. Step 6: Final answer
    x = 27,330.54

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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.