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Finding the Fourth Proportional to 43,408.80, 64,940.40 and 37,629.60

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Solution

The fourth proportional to 43,408.80, 64,940.40 and 37,629.60 is: 56,294.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,408.80 : 64,940.40 = 37,629.60 : x
  2. Step 2: Convert to fraction form
    43,408.80/64,940.40 = 37,629.60/x
  3. Step 3: Cross multiply
    43,408.80x = 64,940.40 × 37,629.60
  4. Step 4: Simplify right side
    43,408.80x = 2,443,681,275.84
  5. Step 5: Solve for x
    x = 2,443,681,275.84/43,408.80
  6. Step 6: Final answer
    x = 56,294.61

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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.