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Finding the Fourth Proportional to 91,261, 125,942.88 and 50,976.46

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Solution

The fourth proportional to 91,261, 125,942.88 and 50,976.46 is: 70,349.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,261 : 125,942.88 = 50,976.46 : x
  2. Step 2: Convert to fraction form
    91,261/125,942.88 = 50,976.46/x
  3. Step 3: Cross multiply
    91,261x = 125,942.88 × 50,976.46
  4. Step 4: Simplify right side
    91,261x = 6,420,122,184.60
  5. Step 5: Solve for x
    x = 6,420,122,184.60/91,261
  6. Step 6: Final answer
    x = 70,349.02

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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.