Home / 77,039.11-115,361.38-53,313.81

Finding the Fourth Proportional to 77,039.11, 115,361.38 and 53,313.81

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Solution

The fourth proportional to 77,039.11, 115,361.38 and 53,313.81 is: 79,834.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,039.11 : 115,361.38 = 53,313.81 : x
  2. Step 2: Convert to fraction form
    77,039.11/115,361.38 = 53,313.81/x
  3. Step 3: Cross multiply
    77,039.11x = 115,361.38 × 53,313.81
  4. Step 4: Simplify right side
    77,039.11x = 6,150,354,328.69
  5. Step 5: Solve for x
    x = 6,150,354,328.69/77,039.11
  6. Step 6: Final answer
    x = 79,834.18

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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.