Home / 90,132.59-124,380.69-49,845.28

Finding the Fourth Proportional to 90,132.59, 124,380.69 and 49,845.28

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Solution

The fourth proportional to 90,132.59, 124,380.69 and 49,845.28 is: 68,785.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,132.59 : 124,380.69 = 49,845.28 : x
  2. Step 2: Convert to fraction form
    90,132.59/124,380.69 = 49,845.28/x
  3. Step 3: Cross multiply
    90,132.59x = 124,380.69 × 49,845.28
  4. Step 4: Simplify right side
    90,132.59x = 6,199,790,319.64
  5. Step 5: Solve for x
    x = 6,199,790,319.64/90,132.59
  6. Step 6: Final answer
    x = 68,785.22

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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.