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Finding the Fourth Proportional to 89,101.75, 122,960.42 and 49,357.75

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Solution

The fourth proportional to 89,101.75, 122,960.42 and 49,357.75 is: 68,113.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,101.75 : 122,960.42 = 49,357.75 : x
  2. Step 2: Convert to fraction form
    89,101.75/122,960.42 = 49,357.75/x
  3. Step 3: Cross multiply
    89,101.75x = 122,960.42 × 49,357.75
  4. Step 4: Simplify right side
    89,101.75x = 6,069,049,670.26
  5. Step 5: Solve for x
    x = 6,069,049,670.26/89,101.75
  6. Step 6: Final answer
    x = 68,113.70

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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.