Home / 31,917.52-43,951.08-31,209.46

Finding the Fourth Proportional to 31,917.52, 43,951.08 and 31,209.46

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Solution

The fourth proportional to 31,917.52, 43,951.08 and 31,209.46 is: 42,976.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,917.52 : 43,951.08 = 31,209.46 : x
  2. Step 2: Convert to fraction form
    31,917.52/43,951.08 = 31,209.46/x
  3. Step 3: Cross multiply
    31,917.52x = 43,951.08 × 31,209.46
  4. Step 4: Simplify right side
    31,917.52x = 1,371,689,473.22
  5. Step 5: Solve for x
    x = 1,371,689,473.22/31,917.52
  6. Step 6: Final answer
    x = 42,976.07

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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.