Home / 76,436.68-114,451.98-51,438.28

Finding the Fourth Proportional to 76,436.68, 114,451.98 and 51,438.28

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Solution

The fourth proportional to 76,436.68, 114,451.98 and 51,438.28 is: 77,020.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,436.68 : 114,451.98 = 51,438.28 : x
  2. Step 2: Convert to fraction form
    76,436.68/114,451.98 = 51,438.28/x
  3. Step 3: Cross multiply
    76,436.68x = 114,451.98 × 51,438.28
  4. Step 4: Simplify right side
    76,436.68x = 5,887,212,993.79
  5. Step 5: Solve for x
    x = 5,887,212,993.79/76,436.68
  6. Step 6: Final answer
    x = 77,020.78

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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.