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Finding the Fourth Proportional to 29,920.20, 44,945.10 and 28,818.60

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Solution

The fourth proportional to 29,920.20, 44,945.10 and 28,818.60 is: 43,290.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,920.20 : 44,945.10 = 28,818.60 : x
  2. Step 2: Convert to fraction form
    29,920.20/44,945.10 = 28,818.60/x
  3. Step 3: Cross multiply
    29,920.20x = 44,945.10 × 28,818.60
  4. Step 4: Simplify right side
    29,920.20x = 1,295,254,858.86
  5. Step 5: Solve for x
    x = 1,295,254,858.86/29,920.20
  6. Step 6: Final answer
    x = 43,290.31

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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.