Home / 84,913.44-117,121.23-72,078.11

Finding the Fourth Proportional to 84,913.44, 117,121.23 and 72,078.11

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Solution

The fourth proportional to 84,913.44, 117,121.23 and 72,078.11 is: 99,417.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,913.44 : 117,121.23 = 72,078.11 : x
  2. Step 2: Convert to fraction form
    84,913.44/117,121.23 = 72,078.11/x
  3. Step 3: Cross multiply
    84,913.44x = 117,121.23 × 72,078.11
  4. Step 4: Simplify right side
    84,913.44x = 8,441,876,313.67
  5. Step 5: Solve for x
    x = 8,441,876,313.67/84,913.44
  6. Step 6: Final answer
    x = 99,417.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.