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Finding the Fourth Proportional to 51,520.50, 71,099.01 and 30,009.68

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Solution

The fourth proportional to 51,520.50, 71,099.01 and 30,009.68 is: 41,413.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,520.50 : 71,099.01 = 30,009.68 : x
  2. Step 2: Convert to fraction form
    51,520.50/71,099.01 = 30,009.68/x
  3. Step 3: Cross multiply
    51,520.50x = 71,099.01 × 30,009.68
  4. Step 4: Simplify right side
    51,520.50x = 2,133,658,538.42
  5. Step 5: Solve for x
    x = 2,133,658,538.42/51,520.50
  6. Step 6: Final answer
    x = 41,413.78

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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.