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Finding the Fourth Proportional to 43,913.60, 65,716.80 and 40,227.20

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Solution

The fourth proportional to 43,913.60, 65,716.80 and 40,227.20 is: 60,200.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,913.60 : 65,716.80 = 40,227.20 : x
  2. Step 2: Convert to fraction form
    43,913.60/65,716.80 = 40,227.20/x
  3. Step 3: Cross multiply
    43,913.60x = 65,716.80 × 40,227.20
  4. Step 4: Simplify right side
    43,913.60x = 2,643,602,856.96
  5. Step 5: Solve for x
    x = 2,643,602,856.96/43,913.60
  6. Step 6: Final answer
    x = 60,200.09

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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.