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Finding the Fourth Proportional to 57,491.35, 79,340.35 and 31,998.78

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Solution

The fourth proportional to 57,491.35, 79,340.35 and 31,998.78 is: 44,159.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,491.35 : 79,340.35 = 31,998.78 : x
  2. Step 2: Convert to fraction form
    57,491.35/79,340.35 = 31,998.78/x
  3. Step 3: Cross multiply
    57,491.35x = 79,340.35 × 31,998.78
  4. Step 4: Simplify right side
    57,491.35x = 2,538,794,404.77
  5. Step 5: Solve for x
    x = 2,538,794,404.77/57,491.35
  6. Step 6: Final answer
    x = 44,159.59

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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.