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Finding the Fourth Proportional to 108,536.68, 162,749.50 and 45,339.56

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Solution

The fourth proportional to 108,536.68, 162,749.50 and 45,339.56 is: 67,986.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,536.68 : 162,749.50 = 45,339.56 : x
  2. Step 2: Convert to fraction form
    108,536.68/162,749.50 = 45,339.56/x
  3. Step 3: Cross multiply
    108,536.68x = 162,749.50 × 45,339.56
  4. Step 4: Simplify right side
    108,536.68x = 7,378,990,720.22
  5. Step 5: Solve for x
    x = 7,378,990,720.22/108,536.68
  6. Step 6: Final answer
    x = 67,986.15

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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.