Home / 90,171.72-124,426.21-49,880.02

Finding the Fourth Proportional to 90,171.72, 124,426.21 and 49,880.02

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Solution

The fourth proportional to 90,171.72, 124,426.21 and 49,880.02 is: 68,828.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,171.72 : 124,426.21 = 49,880.02 : x
  2. Step 2: Convert to fraction form
    90,171.72/124,426.21 = 49,880.02/x
  3. Step 3: Cross multiply
    90,171.72x = 124,426.21 × 49,880.02
  4. Step 4: Simplify right side
    90,171.72x = 6,206,381,843.32
  5. Step 5: Solve for x
    x = 6,206,381,843.32/90,171.72
  6. Step 6: Final answer
    x = 68,828.47

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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.