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Finding the Fourth Proportional to 57,372.36, 79,173.36 and 31,531.20

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Solution

The fourth proportional to 57,372.36, 79,173.36 and 31,531.20 is: 43,512.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,372.36 : 79,173.36 = 31,531.20 : x
  2. Step 2: Convert to fraction form
    57,372.36/79,173.36 = 31,531.20/x
  3. Step 3: Cross multiply
    57,372.36x = 79,173.36 × 31,531.20
  4. Step 4: Simplify right side
    57,372.36x = 2,496,431,048.83
  5. Step 5: Solve for x
    x = 2,496,431,048.83/57,372.36
  6. Step 6: Final answer
    x = 43,512.78

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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.