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Finding the Fourth Proportional to 30,311.73, 45,447.03 and 10,579.50

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Solution

The fourth proportional to 30,311.73, 45,447.03 and 10,579.50 is: 15,862.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,311.73 : 45,447.03 = 10,579.50 : x
  2. Step 2: Convert to fraction form
    30,311.73/45,447.03 = 10,579.50/x
  3. Step 3: Cross multiply
    30,311.73x = 45,447.03 × 10,579.50
  4. Step 4: Simplify right side
    30,311.73x = 480,806,853.89
  5. Step 5: Solve for x
    x = 480,806,853.89/30,311.73
  6. Step 6: Final answer
    x = 15,862.07

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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.