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Finding the Fourth Proportional to 91,252.88, 125,920.78 and 50,961.05

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Solution

The fourth proportional to 91,252.88, 125,920.78 and 50,961.05 is: 70,321.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,252.88 : 125,920.78 = 50,961.05 : x
  2. Step 2: Convert to fraction form
    91,252.88/125,920.78 = 50,961.05/x
  3. Step 3: Cross multiply
    91,252.88x = 125,920.78 × 50,961.05
  4. Step 4: Simplify right side
    91,252.88x = 6,417,054,880.82
  5. Step 5: Solve for x
    x = 6,417,054,880.82/91,252.88
  6. Step 6: Final answer
    x = 70,321.67

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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.