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Finding the Fourth Proportional to 57,481.35, 79,317.17 and 31,980.93

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Solution

The fourth proportional to 57,481.35, 79,317.17 and 31,980.93 is: 44,129.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,481.35 : 79,317.17 = 31,980.93 : x
  2. Step 2: Convert to fraction form
    57,481.35/79,317.17 = 31,980.93/x
  3. Step 3: Cross multiply
    57,481.35x = 79,317.17 × 31,980.93
  4. Step 4: Simplify right side
    57,481.35x = 2,536,636,704.05
  5. Step 5: Solve for x
    x = 2,536,636,704.05/57,481.35
  6. Step 6: Final answer
    x = 44,129.74

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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.