Home / 81,290.83-121,958.16-33,890.17

Finding the Fourth Proportional to 81,290.83, 121,958.16 and 33,890.17

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Solution

The fourth proportional to 81,290.83, 121,958.16 and 33,890.17 is: 50,844.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,290.83 : 121,958.16 = 33,890.17 : x
  2. Step 2: Convert to fraction form
    81,290.83/121,958.16 = 33,890.17/x
  3. Step 3: Cross multiply
    81,290.83x = 121,958.16 × 33,890.17
  4. Step 4: Simplify right side
    81,290.83x = 4,133,182,775.29
  5. Step 5: Solve for x
    x = 4,133,182,775.29/81,290.83
  6. Step 6: Final answer
    x = 50,844.39

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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.