Home / 90,788.82-125,299.64-54,977.92

Finding the Fourth Proportional to 90,788.82, 125,299.64 and 54,977.92

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Solution

The fourth proportional to 90,788.82, 125,299.64 and 54,977.92 is: 75,876.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,788.82 : 125,299.64 = 54,977.92 : x
  2. Step 2: Convert to fraction form
    90,788.82/125,299.64 = 54,977.92/x
  3. Step 3: Cross multiply
    90,788.82x = 125,299.64 × 54,977.92
  4. Step 4: Simplify right side
    90,788.82x = 6,888,713,583.95
  5. Step 5: Solve for x
    x = 6,888,713,583.95/90,788.82
  6. Step 6: Final answer
    x = 75,876.23

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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.