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Finding the Fourth Proportional to 91,137.43, 125,719.10 and 53,404.39

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Solution

The fourth proportional to 91,137.43, 125,719.10 and 53,404.39 is: 73,668.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,137.43 : 125,719.10 = 53,404.39 : x
  2. Step 2: Convert to fraction form
    91,137.43/125,719.10 = 53,404.39/x
  3. Step 3: Cross multiply
    91,137.43x = 125,719.10 × 53,404.39
  4. Step 4: Simplify right side
    91,137.43x = 6,713,951,218.25
  5. Step 5: Solve for x
    x = 6,713,951,218.25/91,137.43
  6. Step 6: Final answer
    x = 73,668.43

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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.