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Finding the Fourth Proportional to 57,458.74, 86,188.11 and 18,018.93

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Solution

The fourth proportional to 57,458.74, 86,188.11 and 18,018.93 is: 27,028.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,458.74 : 86,188.11 = 18,018.93 : x
  2. Step 2: Convert to fraction form
    57,458.74/86,188.11 = 18,018.93/x
  3. Step 3: Cross multiply
    57,458.74x = 86,188.11 × 18,018.93
  4. Step 4: Simplify right side
    57,458.74x = 1,553,016,999.89
  5. Step 5: Solve for x
    x = 1,553,016,999.89/57,458.74
  6. Step 6: Final answer
    x = 27,028.39

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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.