Home / 57,475.78-79,321.48-31,981.43

Finding the Fourth Proportional to 57,475.78, 79,321.48 and 31,981.43

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Solution

The fourth proportional to 57,475.78, 79,321.48 and 31,981.43 is: 44,137.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,475.78 : 79,321.48 = 31,981.43 : x
  2. Step 2: Convert to fraction form
    57,475.78/79,321.48 = 31,981.43/x
  3. Step 3: Cross multiply
    57,475.78x = 79,321.48 × 31,981.43
  4. Step 4: Simplify right side
    57,475.78x = 2,536,814,478.47
  5. Step 5: Solve for x
    x = 2,536,814,478.47/57,475.78
  6. Step 6: Final answer
    x = 44,137.11

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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.