Home / 80,738.75-111,419.48-45,410.75

Finding the Fourth Proportional to 80,738.75, 111,419.48 and 45,410.75

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Solution

The fourth proportional to 80,738.75, 111,419.48 and 45,410.75 is: 62,666.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,738.75 : 111,419.48 = 45,410.75 : x
  2. Step 2: Convert to fraction form
    80,738.75/111,419.48 = 45,410.75/x
  3. Step 3: Cross multiply
    80,738.75x = 111,419.48 × 45,410.75
  4. Step 4: Simplify right side
    80,738.75x = 5,059,642,151.41
  5. Step 5: Solve for x
    x = 5,059,642,151.41/80,738.75
  6. Step 6: Final answer
    x = 62,666.84

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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.