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Finding the Fourth Proportional to 57,560.48, 86,336.50 and 18,128.87

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Solution

The fourth proportional to 57,560.48, 86,336.50 and 18,128.87 is: 27,191.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,560.48 : 86,336.50 = 18,128.87 : x
  2. Step 2: Convert to fraction form
    57,560.48/86,336.50 = 18,128.87/x
  3. Step 3: Cross multiply
    57,560.48x = 86,336.50 × 18,128.87
  4. Step 4: Simplify right side
    57,560.48x = 1,565,183,184.76
  5. Step 5: Solve for x
    x = 1,565,183,184.76/57,560.48
  6. Step 6: Final answer
    x = 27,191.98

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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.