Home / 31,103.52-43,104.36-30,512.76

Finding the Fourth Proportional to 31,103.52, 43,104.36 and 30,512.76

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Solution

The fourth proportional to 31,103.52, 43,104.36 and 30,512.76 is: 42,285.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,103.52 : 43,104.36 = 30,512.76 : x
  2. Step 2: Convert to fraction form
    31,103.52/43,104.36 = 30,512.76/x
  3. Step 3: Cross multiply
    31,103.52x = 43,104.36 × 30,512.76
  4. Step 4: Simplify right side
    31,103.52x = 1,315,232,991.63
  5. Step 5: Solve for x
    x = 1,315,232,991.63/31,103.52
  6. Step 6: Final answer
    x = 42,285.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.