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Finding the Fourth Proportional to 79,112.85, 109,171.51 and 43,295.93

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Solution

The fourth proportional to 79,112.85, 109,171.51 and 43,295.93 is: 59,746.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,112.85 : 109,171.51 = 43,295.93 : x
  2. Step 2: Convert to fraction form
    79,112.85/109,171.51 = 43,295.93/x
  3. Step 3: Cross multiply
    79,112.85x = 109,171.51 × 43,295.93
  4. Step 4: Simplify right side
    79,112.85x = 4,726,682,219.64
  5. Step 5: Solve for x
    x = 4,726,682,219.64/79,112.85
  6. Step 6: Final answer
    x = 59,746.07

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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.