Home / 81,219.29-121,747.12-33,860.59

Finding the Fourth Proportional to 81,219.29, 121,747.12 and 33,860.59

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Solution

The fourth proportional to 81,219.29, 121,747.12 and 33,860.59 is: 50,756.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,219.29 : 121,747.12 = 33,860.59 : x
  2. Step 2: Convert to fraction form
    81,219.29/121,747.12 = 33,860.59/x
  3. Step 3: Cross multiply
    81,219.29x = 121,747.12 × 33,860.59
  4. Step 4: Simplify right side
    81,219.29x = 4,122,428,924.98
  5. Step 5: Solve for x
    x = 4,122,428,924.98/81,219.29
  6. Step 6: Final answer
    x = 50,756.77

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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.