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Finding the Fourth Proportional to 57,360.36, 79,156.77 and 31,866.78

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Solution

The fourth proportional to 57,360.36, 79,156.77 and 31,866.78 is: 43,975.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,360.36 : 79,156.77 = 31,866.78 : x
  2. Step 2: Convert to fraction form
    57,360.36/79,156.77 = 31,866.78/x
  3. Step 3: Cross multiply
    57,360.36x = 79,156.77 × 31,866.78
  4. Step 4: Simplify right side
    57,360.36x = 2,522,471,375.10
  5. Step 5: Solve for x
    x = 2,522,471,375.10/57,360.36
  6. Step 6: Final answer
    x = 43,975.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.