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Finding the Fourth Proportional to 70,414.60, 105,655.74 and 43,753.36

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Solution

The fourth proportional to 70,414.60, 105,655.74 and 43,753.36 is: 65,651.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,414.60 : 105,655.74 = 43,753.36 : x
  2. Step 2: Convert to fraction form
    70,414.60/105,655.74 = 43,753.36/x
  3. Step 3: Cross multiply
    70,414.60x = 105,655.74 × 43,753.36
  4. Step 4: Simplify right side
    70,414.60x = 4,622,793,628.29
  5. Step 5: Solve for x
    x = 4,622,793,628.29/70,414.60
  6. Step 6: Final answer
    x = 65,651.07

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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.