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Finding the Fourth Proportional to 57,296.76, 86,076.90 and 40,697.16

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Solution

The fourth proportional to 57,296.76, 86,076.90 and 40,697.16 is: 61,139.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,296.76 : 86,076.90 = 40,697.16 : x
  2. Step 2: Convert to fraction form
    57,296.76/86,076.90 = 40,697.16/x
  3. Step 3: Cross multiply
    57,296.76x = 86,076.90 × 40,697.16
  4. Step 4: Simplify right side
    57,296.76x = 3,503,085,371.60
  5. Step 5: Solve for x
    x = 3,503,085,371.60/57,296.76
  6. Step 6: Final answer
    x = 61,139.33

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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.