Home / 57,428.92-85,958.64-30,708.20

Finding the Fourth Proportional to 57,428.92, 85,958.64 and 30,708.20

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Solution

The fourth proportional to 57,428.92, 85,958.64 and 30,708.20 is: 45,963.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,428.92 : 85,958.64 = 30,708.20 : x
  2. Step 2: Convert to fraction form
    57,428.92/85,958.64 = 30,708.20/x
  3. Step 3: Cross multiply
    57,428.92x = 85,958.64 × 30,708.20
  4. Step 4: Simplify right side
    57,428.92x = 2,639,635,108.85
  5. Step 5: Solve for x
    x = 2,639,635,108.85/57,428.92
  6. Step 6: Final answer
    x = 45,963.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.