Home / 90,961.38-125,578.80-60,797.79

Finding the Fourth Proportional to 90,961.38, 125,578.80 and 60,797.79

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Solution

The fourth proportional to 90,961.38, 125,578.80 and 60,797.79 is: 83,935.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,961.38 : 125,578.80 = 60,797.79 : x
  2. Step 2: Convert to fraction form
    90,961.38/125,578.80 = 60,797.79/x
  3. Step 3: Cross multiply
    90,961.38x = 125,578.80 × 60,797.79
  4. Step 4: Simplify right side
    90,961.38x = 7,634,913,510.85
  5. Step 5: Solve for x
    x = 7,634,913,510.85/90,961.38
  6. Step 6: Final answer
    x = 83,935.77

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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.