Home / 76,847.20-106,059.48-45,028.78

Finding the Fourth Proportional to 76,847.20, 106,059.48 and 45,028.78

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Solution

The fourth proportional to 76,847.20, 106,059.48 and 45,028.78 is: 62,145.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,847.20 : 106,059.48 = 45,028.78 : x
  2. Step 2: Convert to fraction form
    76,847.20/106,059.48 = 45,028.78/x
  3. Step 3: Cross multiply
    76,847.20x = 106,059.48 × 45,028.78
  4. Step 4: Simplify right side
    76,847.20x = 4,775,728,991.83
  5. Step 5: Solve for x
    x = 4,775,728,991.83/76,847.20
  6. Step 6: Final answer
    x = 62,145.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.