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Finding the Fourth Proportional to 72,509.92, 100,082.08 and 49,549.03

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Solution

The fourth proportional to 72,509.92, 100,082.08 and 49,549.03 is: 68,390.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,509.92 : 100,082.08 = 49,549.03 : x
  2. Step 2: Convert to fraction form
    72,509.92/100,082.08 = 49,549.03/x
  3. Step 3: Cross multiply
    72,509.92x = 100,082.08 × 49,549.03
  4. Step 4: Simplify right side
    72,509.92x = 4,958,970,318.33
  5. Step 5: Solve for x
    x = 4,958,970,318.33/72,509.92
  6. Step 6: Final answer
    x = 68,390.23

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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.