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Finding the Fourth Proportional to 75,325.62, 103,938.61 and 45,103.86

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Solution

The fourth proportional to 75,325.62, 103,938.61 and 45,103.86 is: 62,236.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,325.62 : 103,938.61 = 45,103.86 : x
  2. Step 2: Convert to fraction form
    75,325.62/103,938.61 = 45,103.86/x
  3. Step 3: Cross multiply
    75,325.62x = 103,938.61 × 45,103.86
  4. Step 4: Simplify right side
    75,325.62x = 4,688,032,514.03
  5. Step 5: Solve for x
    x = 4,688,032,514.03/75,325.62
  6. Step 6: Final answer
    x = 62,236.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.