Home / 76,800.08-115,200.20-50,621.72

Finding the Fourth Proportional to 76,800.08, 115,200.20 and 50,621.72

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Solution

The fourth proportional to 76,800.08, 115,200.20 and 50,621.72 is: 75,932.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,800.08 : 115,200.20 = 50,621.72 : x
  2. Step 2: Convert to fraction form
    76,800.08/115,200.20 = 50,621.72/x
  3. Step 3: Cross multiply
    76,800.08x = 115,200.20 × 50,621.72
  4. Step 4: Simplify right side
    76,800.08x = 5,831,632,268.34
  5. Step 5: Solve for x
    x = 5,831,632,268.34/76,800.08
  6. Step 6: Final answer
    x = 75,932.63

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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.