Home / 77,715.11-116,420.11-40,299.64

Finding the Fourth Proportional to 77,715.11, 116,420.11 and 40,299.64

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Solution

The fourth proportional to 77,715.11, 116,420.11 and 40,299.64 is: 60,370.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,715.11 : 116,420.11 = 40,299.64 : x
  2. Step 2: Convert to fraction form
    77,715.11/116,420.11 = 40,299.64/x
  3. Step 3: Cross multiply
    77,715.11x = 116,420.11 × 40,299.64
  4. Step 4: Simplify right side
    77,715.11x = 4,691,687,939.66
  5. Step 5: Solve for x
    x = 4,691,687,939.66/77,715.11
  6. Step 6: Final answer
    x = 60,370.35

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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.