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Finding the Fourth Proportional to 30,551.76, 45,888.12 and 18,568.62

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Solution

The fourth proportional to 30,551.76, 45,888.12 and 18,568.62 is: 27,889.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,551.76 : 45,888.12 = 18,568.62 : x
  2. Step 2: Convert to fraction form
    30,551.76/45,888.12 = 18,568.62/x
  3. Step 3: Cross multiply
    30,551.76x = 45,888.12 × 18,568.62
  4. Step 4: Simplify right side
    30,551.76x = 852,079,062.79
  5. Step 5: Solve for x
    x = 852,079,062.79/30,551.76
  6. Step 6: Final answer
    x = 27,889.69

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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.