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Finding the Fourth Proportional to 45,803.80, 68,708.90 and 18,098.20

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Solution

The fourth proportional to 45,803.80, 68,708.90 and 18,098.20 is: 27,148.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,803.80 : 68,708.90 = 18,098.20 : x
  2. Step 2: Convert to fraction form
    45,803.80/68,708.90 = 18,098.20/x
  3. Step 3: Cross multiply
    45,803.80x = 68,708.90 × 18,098.20
  4. Step 4: Simplify right side
    45,803.80x = 1,243,507,413.98
  5. Step 5: Solve for x
    x = 1,243,507,413.98/45,803.80
  6. Step 6: Final answer
    x = 27,148.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.