Home / 90,571.31-124,979.28-50,280.70

Finding the Fourth Proportional to 90,571.31, 124,979.28 and 50,280.70

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Solution

The fourth proportional to 90,571.31, 124,979.28 and 50,280.70 is: 69,382.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,571.31 : 124,979.28 = 50,280.70 : x
  2. Step 2: Convert to fraction form
    90,571.31/124,979.28 = 50,280.70/x
  3. Step 3: Cross multiply
    90,571.31x = 124,979.28 × 50,280.70
  4. Step 4: Simplify right side
    90,571.31x = 6,284,045,558.65
  5. Step 5: Solve for x
    x = 6,284,045,558.65/90,571.31
  6. Step 6: Final answer
    x = 69,382.29

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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.