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Finding the Fourth Proportional to 43,163.60, 64,615.80 and 25,624.40

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Solution

The fourth proportional to 43,163.60, 64,615.80 and 25,624.40 is: 38,359.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,163.60 : 64,615.80 = 25,624.40 : x
  2. Step 2: Convert to fraction form
    43,163.60/64,615.80 = 25,624.40/x
  3. Step 3: Cross multiply
    43,163.60x = 64,615.80 × 25,624.40
  4. Step 4: Simplify right side
    43,163.60x = 1,655,741,105.52
  5. Step 5: Solve for x
    x = 1,655,741,105.52/43,163.60
  6. Step 6: Final answer
    x = 38,359.66

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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.