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Finding the Fourth Proportional to 57,342.95, 79,130.56 and 31,850.95

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Solution

The fourth proportional to 57,342.95, 79,130.56 and 31,850.95 is: 43,952.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,342.95 : 79,130.56 = 31,850.95 : x
  2. Step 2: Convert to fraction form
    57,342.95/79,130.56 = 31,850.95/x
  3. Step 3: Cross multiply
    57,342.95x = 79,130.56 × 31,850.95
  4. Step 4: Simplify right side
    57,342.95x = 2,520,383,350.78
  5. Step 5: Solve for x
    x = 2,520,383,350.78/57,342.95
  6. Step 6: Final answer
    x = 43,952.81

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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.