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Finding the Fourth Proportional to 57,808.60, 86,540.10 and 51,587.80

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Solution

The fourth proportional to 57,808.60, 86,540.10 and 51,587.80 is: 77,227.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,808.60 : 86,540.10 = 51,587.80 : x
  2. Step 2: Convert to fraction form
    57,808.60/86,540.10 = 51,587.80/x
  3. Step 3: Cross multiply
    57,808.60x = 86,540.10 × 51,587.80
  4. Step 4: Simplify right side
    57,808.60x = 4,464,413,370.78
  5. Step 5: Solve for x
    x = 4,464,413,370.78/57,808.60
  6. Step 6: Final answer
    x = 77,227.50

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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.