Home / 76,756.38-115,125.14-20,600.90

Finding the Fourth Proportional to 76,756.38, 115,125.14 and 20,600.90

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Solution

The fourth proportional to 76,756.38, 115,125.14 and 20,600.90 is: 30,898.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,756.38 : 115,125.14 = 20,600.90 : x
  2. Step 2: Convert to fraction form
    76,756.38/115,125.14 = 20,600.90/x
  3. Step 3: Cross multiply
    76,756.38x = 115,125.14 × 20,600.90
  4. Step 4: Simplify right side
    76,756.38x = 2,371,681,496.63
  5. Step 5: Solve for x
    x = 2,371,681,496.63/76,756.38
  6. Step 6: Final answer
    x = 30,898.82

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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.