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Finding the Fourth Proportional to 90,636.88, 125,098.88 and 50,364.48

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Solution

The fourth proportional to 90,636.88, 125,098.88 and 50,364.48 is: 69,514.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,636.88 : 125,098.88 = 50,364.48 : x
  2. Step 2: Convert to fraction form
    90,636.88/125,098.88 = 50,364.48/x
  3. Step 3: Cross multiply
    90,636.88x = 125,098.88 × 50,364.48
  4. Step 4: Simplify right side
    90,636.88x = 6,300,540,039.78
  5. Step 5: Solve for x
    x = 6,300,540,039.78/90,636.88
  6. Step 6: Final answer
    x = 69,514.09

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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.