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Finding the Fourth Proportional to 29,313,129.60, 43,969,694.40 and 20,243,203.20

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Solution

The fourth proportional to 29,313,129.60, 43,969,694.40 and 20,243,203.20 is: 30,364,804.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,313,129.60 : 43,969,694.40 = 20,243,203.20 : x
  2. Step 2: Convert to fraction form
    29,313,129.60/43,969,694.40 = 20,243,203.20/x
  3. Step 3: Cross multiply
    29,313,129.60x = 43,969,694.40 × 20,243,203.20
  4. Step 4: Simplify right side
    29,313,129.60x = 890,087,458,381,102
  5. Step 5: Solve for x
    x = 890,087,458,381,102/29,313,129.60
  6. Step 6: Final answer
    x = 30,364,804.80

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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.