Home / 73,921.24-102,011.28-39,929.76

Finding the Fourth Proportional to 73,921.24, 102,011.28 and 39,929.76

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Solution

The fourth proportional to 73,921.24, 102,011.28 and 39,929.76 is: 55,103.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,921.24 : 102,011.28 = 39,929.76 : x
  2. Step 2: Convert to fraction form
    73,921.24/102,011.28 = 39,929.76/x
  3. Step 3: Cross multiply
    73,921.24x = 102,011.28 × 39,929.76
  4. Step 4: Simplify right side
    73,921.24x = 4,073,285,927.69
  5. Step 5: Solve for x
    x = 4,073,285,927.69/73,921.24
  6. Step 6: Final answer
    x = 55,103.05

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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.