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Finding the Fourth Proportional to 45,869.34, 68,804.07 and 12,589.86

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Solution

The fourth proportional to 45,869.34, 68,804.07 and 12,589.86 is: 18,884.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,869.34 : 68,804.07 = 12,589.86 : x
  2. Step 2: Convert to fraction form
    45,869.34/68,804.07 = 12,589.86/x
  3. Step 3: Cross multiply
    45,869.34x = 68,804.07 × 12,589.86
  4. Step 4: Simplify right side
    45,869.34x = 866,233,608.73
  5. Step 5: Solve for x
    x = 866,233,608.73/45,869.34
  6. Step 6: Final answer
    x = 18,884.81

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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.