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Finding the Fourth Proportional to 91,171.56, 125,819.12 and 50,885.12

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Solution

The fourth proportional to 91,171.56, 125,819.12 and 50,885.12 is: 70,222.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,171.56 : 125,819.12 = 50,885.12 : x
  2. Step 2: Convert to fraction form
    91,171.56/125,819.12 = 50,885.12/x
  3. Step 3: Cross multiply
    91,171.56x = 125,819.12 × 50,885.12
  4. Step 4: Simplify right side
    91,171.56x = 6,402,321,019.49
  5. Step 5: Solve for x
    x = 6,402,321,019.49/91,171.56
  6. Step 6: Final answer
    x = 70,222.79

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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.