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Finding the Fourth Proportional to 75,161.79, 103,487.22 and 63,807.75

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Solution

The fourth proportional to 75,161.79, 103,487.22 and 63,807.75 is: 87,854.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,161.79 : 103,487.22 = 63,807.75 : x
  2. Step 2: Convert to fraction form
    75,161.79/103,487.22 = 63,807.75/x
  3. Step 3: Cross multiply
    75,161.79x = 103,487.22 × 63,807.75
  4. Step 4: Simplify right side
    75,161.79x = 6,603,286,661.96
  5. Step 5: Solve for x
    x = 6,603,286,661.96/75,161.79
  6. Step 6: Final answer
    x = 87,854.30

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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.