Home / 83,494.08-114,516.36-78,975.36

Finding the Fourth Proportional to 83,494.08, 114,516.36 and 78,975.36

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Solution

The fourth proportional to 83,494.08, 114,516.36 and 78,975.36 is: 108,318.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,494.08 : 114,516.36 = 78,975.36 : x
  2. Step 2: Convert to fraction form
    83,494.08/114,516.36 = 78,975.36/x
  3. Step 3: Cross multiply
    83,494.08x = 114,516.36 × 78,975.36
  4. Step 4: Simplify right side
    83,494.08x = 9,043,970,756.89
  5. Step 5: Solve for x
    x = 9,043,970,756.89/83,494.08
  6. Step 6: Final answer
    x = 108,318.71

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.