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Finding the Fourth Proportional to 30,028.80, 45,043.20 and 29,414.40

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Solution

The fourth proportional to 30,028.80, 45,043.20 and 29,414.40 is: 44,121.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,028.80 : 45,043.20 = 29,414.40 : x
  2. Step 2: Convert to fraction form
    30,028.80/45,043.20 = 29,414.40/x
  3. Step 3: Cross multiply
    30,028.80x = 45,043.20 × 29,414.40
  4. Step 4: Simplify right side
    30,028.80x = 1,324,918,702.08
  5. Step 5: Solve for x
    x = 1,324,918,702.08/30,028.80
  6. Step 6: Final answer
    x = 44,121.60

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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.