Home / 73,789.60-110,669.64-21,186.76

Finding the Fourth Proportional to 73,789.60, 110,669.64 and 21,186.76

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Solution

The fourth proportional to 73,789.60, 110,669.64 and 21,186.76 is: 31,775.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,789.60 : 110,669.64 = 21,186.76 : x
  2. Step 2: Convert to fraction form
    73,789.60/110,669.64 = 21,186.76/x
  3. Step 3: Cross multiply
    73,789.60x = 110,669.64 × 21,186.76
  4. Step 4: Simplify right side
    73,789.60x = 2,344,731,101.97
  5. Step 5: Solve for x
    x = 2,344,731,101.97/73,789.60
  6. Step 6: Final answer
    x = 31,775.90

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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.