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Finding the Fourth Proportional to 108,435.78, 162,599.10 and 45,239.52

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Solution

The fourth proportional to 108,435.78, 162,599.10 and 45,239.52 is: 67,836.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,435.78 : 162,599.10 = 45,239.52 : x
  2. Step 2: Convert to fraction form
    108,435.78/162,599.10 = 45,239.52/x
  3. Step 3: Cross multiply
    108,435.78x = 162,599.10 × 45,239.52
  4. Step 4: Simplify right side
    108,435.78x = 7,355,905,236.43
  5. Step 5: Solve for x
    x = 7,355,905,236.43/108,435.78
  6. Step 6: Final answer
    x = 67,836.51

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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.