Home / 78,103.30-117,085.83-36,539.14

Finding the Fourth Proportional to 78,103.30, 117,085.83 and 36,539.14

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Solution

The fourth proportional to 78,103.30, 117,085.83 and 36,539.14 is: 54,776.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,103.30 : 117,085.83 = 36,539.14 : x
  2. Step 2: Convert to fraction form
    78,103.30/117,085.83 = 36,539.14/x
  3. Step 3: Cross multiply
    78,103.30x = 117,085.83 × 36,539.14
  4. Step 4: Simplify right side
    78,103.30x = 4,278,215,534.39
  5. Step 5: Solve for x
    x = 4,278,215,534.39/78,103.30
  6. Step 6: Final answer
    x = 54,776.37

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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.