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Finding the Fourth Proportional to 79,634.90, 109,883.61 and 45,636.84

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Solution

The fourth proportional to 79,634.90, 109,883.61 and 45,636.84 is: 62,971.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,634.90 : 109,883.61 = 45,636.84 : x
  2. Step 2: Convert to fraction form
    79,634.90/109,883.61 = 45,636.84/x
  3. Step 3: Cross multiply
    79,634.90x = 109,883.61 × 45,636.84
  4. Step 4: Simplify right side
    79,634.90x = 5,014,741,165.59
  5. Step 5: Solve for x
    x = 5,014,741,165.59/79,634.90
  6. Step 6: Final answer
    x = 62,971.65

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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.