Home / 90,143.39-124,387.09-49,851.68

Finding the Fourth Proportional to 90,143.39, 124,387.09 and 49,851.68

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Solution

The fourth proportional to 90,143.39, 124,387.09 and 49,851.68 is: 68,789.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,143.39 : 124,387.09 = 49,851.68 : x
  2. Step 2: Convert to fraction form
    90,143.39/124,387.09 = 49,851.68/x
  3. Step 3: Cross multiply
    90,143.39x = 124,387.09 × 49,851.68
  4. Step 4: Simplify right side
    90,143.39x = 6,200,904,660.25
  5. Step 5: Solve for x
    x = 6,200,904,660.25/90,143.39
  6. Step 6: Final answer
    x = 68,789.34

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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.