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Finding the Fourth Proportional to 57,400.59, 79,213.76 and 31,560.23

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Solution

The fourth proportional to 57,400.59, 79,213.76 and 31,560.23 is: 43,553.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,400.59 : 79,213.76 = 31,560.23 : x
  2. Step 2: Convert to fraction form
    57,400.59/79,213.76 = 31,560.23/x
  3. Step 3: Cross multiply
    57,400.59x = 79,213.76 × 31,560.23
  4. Step 4: Simplify right side
    57,400.59x = 2,500,003,930.89
  5. Step 5: Solve for x
    x = 2,500,003,930.89/57,400.59
  6. Step 6: Final answer
    x = 43,553.63

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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.