Home / 77,093.13-115,683.43-30,378.81

Finding the Fourth Proportional to 77,093.13, 115,683.43 and 30,378.81

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Solution

The fourth proportional to 77,093.13, 115,683.43 and 30,378.81 is: 45,585.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,093.13 : 115,683.43 = 30,378.81 : x
  2. Step 2: Convert to fraction form
    77,093.13/115,683.43 = 30,378.81/x
  3. Step 3: Cross multiply
    77,093.13x = 115,683.43 × 30,378.81
  4. Step 4: Simplify right side
    77,093.13x = 3,514,324,940.12
  5. Step 5: Solve for x
    x = 3,514,324,940.12/77,093.13
  6. Step 6: Final answer
    x = 45,585.45

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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.