Home / 83,139.92-114,775.08-64,950.56

Finding the Fourth Proportional to 83,139.92, 114,775.08 and 64,950.56

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Solution

The fourth proportional to 83,139.92, 114,775.08 and 64,950.56 is: 89,664.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,139.92 : 114,775.08 = 64,950.56 : x
  2. Step 2: Convert to fraction form
    83,139.92/114,775.08 = 64,950.56/x
  3. Step 3: Cross multiply
    83,139.92x = 114,775.08 × 64,950.56
  4. Step 4: Simplify right side
    83,139.92x = 7,454,705,720.04
  5. Step 5: Solve for x
    x = 7,454,705,720.04/83,139.92
  6. Step 6: Final answer
    x = 89,664.58

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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.