Home / 76,380.96-114,542.64-45,225.12

Finding the Fourth Proportional to 76,380.96, 114,542.64 and 45,225.12

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Solution

The fourth proportional to 76,380.96, 114,542.64 and 45,225.12 is: 67,820.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,380.96 : 114,542.64 = 45,225.12 : x
  2. Step 2: Convert to fraction form
    76,380.96/114,542.64 = 45,225.12/x
  3. Step 3: Cross multiply
    76,380.96x = 114,542.64 × 45,225.12
  4. Step 4: Simplify right side
    76,380.96x = 5,180,204,639.12
  5. Step 5: Solve for x
    x = 5,180,204,639.12/76,380.96
  6. Step 6: Final answer
    x = 67,820.63

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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.