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Finding the Fourth Proportional to 57,351.60, 85,854.60 and 51,130.80

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Solution

The fourth proportional to 57,351.60, 85,854.60 and 51,130.80 is: 76,542.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,351.60 : 85,854.60 = 51,130.80 : x
  2. Step 2: Convert to fraction form
    57,351.60/85,854.60 = 51,130.80/x
  3. Step 3: Cross multiply
    57,351.60x = 85,854.60 × 51,130.80
  4. Step 4: Simplify right side
    57,351.60x = 4,389,814,381.68
  5. Step 5: Solve for x
    x = 4,389,814,381.68/57,351.60
  6. Step 6: Final answer
    x = 76,542.14

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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.