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Finding the Fourth Proportional to 60,467.78, 90,711.06 and 30,869.60

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Solution

The fourth proportional to 60,467.78, 90,711.06 and 30,869.60 is: 46,309.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,467.78 : 90,711.06 = 30,869.60 : x
  2. Step 2: Convert to fraction form
    60,467.78/90,711.06 = 30,869.60/x
  3. Step 3: Cross multiply
    60,467.78x = 90,711.06 × 30,869.60
  4. Step 4: Simplify right side
    60,467.78x = 2,800,214,137.78
  5. Step 5: Solve for x
    x = 2,800,214,137.78/60,467.78
  6. Step 6: Final answer
    x = 46,309.19

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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.