Home / 78,710.20-118,065.30-50,716.60

Finding the Fourth Proportional to 78,710.20, 118,065.30 and 50,716.60

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Solution

The fourth proportional to 78,710.20, 118,065.30 and 50,716.60 is: 76,074.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,710.20 : 118,065.30 = 50,716.60 : x
  2. Step 2: Convert to fraction form
    78,710.20/118,065.30 = 50,716.60/x
  3. Step 3: Cross multiply
    78,710.20x = 118,065.30 × 50,716.60
  4. Step 4: Simplify right side
    78,710.20x = 5,987,870,593.98
  5. Step 5: Solve for x
    x = 5,987,870,593.98/78,710.20
  6. Step 6: Final answer
    x = 76,074.90

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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.