Home / 90,171.28-124,435.20-49,882

Finding the Fourth Proportional to 90,171.28, 124,435.20 and 49,882

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Solution

The fourth proportional to 90,171.28, 124,435.20 and 49,882 is: 68,836.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,171.28 : 124,435.20 = 49,882 : x
  2. Step 2: Convert to fraction form
    90,171.28/124,435.20 = 49,882/x
  3. Step 3: Cross multiply
    90,171.28x = 124,435.20 × 49,882
  4. Step 4: Simplify right side
    90,171.28x = 6,207,076,646.40
  5. Step 5: Solve for x
    x = 6,207,076,646.40/90,171.28
  6. Step 6: Final answer
    x = 68,836.51

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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.