Home / 77,104.45-115,336.82-72,380.53

Finding the Fourth Proportional to 77,104.45, 115,336.82 and 72,380.53

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Solution

The fourth proportional to 77,104.45, 115,336.82 and 72,380.53 is: 108,270.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,104.45 : 115,336.82 = 72,380.53 : x
  2. Step 2: Convert to fraction form
    77,104.45/115,336.82 = 72,380.53/x
  3. Step 3: Cross multiply
    77,104.45x = 115,336.82 × 72,380.53
  4. Step 4: Simplify right side
    77,104.45x = 8,348,140,485.24
  5. Step 5: Solve for x
    x = 8,348,140,485.24/77,104.45
  6. Step 6: Final answer
    x = 108,270.54

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1.5x scale

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.