Home / 83,921.58-115,772.66-49,910.98

Finding the Fourth Proportional to 83,921.58, 115,772.66 and 49,910.98

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Solution

The fourth proportional to 83,921.58, 115,772.66 and 49,910.98 is: 68,853.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,921.58 : 115,772.66 = 49,910.98 : x
  2. Step 2: Convert to fraction form
    83,921.58/115,772.66 = 49,910.98/x
  3. Step 3: Cross multiply
    83,921.58x = 115,772.66 × 49,910.98
  4. Step 4: Simplify right side
    83,921.58x = 5,778,326,917.81
  5. Step 5: Solve for x
    x = 5,778,326,917.81/83,921.58
  6. Step 6: Final answer
    x = 68,853.89

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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.