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Finding the Fourth Proportional to 28,978,375.40, 43,467,563.10 and 25,955,066.60

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Solution

The fourth proportional to 28,978,375.40, 43,467,563.10 and 25,955,066.60 is: 38,932,599.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,978,375.40 : 43,467,563.10 = 25,955,066.60 : x
  2. Step 2: Convert to fraction form
    28,978,375.40/43,467,563.10 = 25,955,066.60/x
  3. Step 3: Cross multiply
    28,978,375.40x = 43,467,563.10 × 25,955,066.60
  4. Step 4: Simplify right side
    28,978,375.40x = 1,128,203,495,200,202.50
  5. Step 5: Solve for x
    x = 1,128,203,495,200,202.50/28,978,375.40
  6. Step 6: Final answer
    x = 38,932,599.90

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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.