Home / 78,161.31-117,244.13-48,664.35

Finding the Fourth Proportional to 78,161.31, 117,244.13 and 48,664.35

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Solution

The fourth proportional to 78,161.31, 117,244.13 and 48,664.35 is: 72,997.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,161.31 : 117,244.13 = 48,664.35 : x
  2. Step 2: Convert to fraction form
    78,161.31/117,244.13 = 48,664.35/x
  3. Step 3: Cross multiply
    78,161.31x = 117,244.13 × 48,664.35
  4. Step 4: Simplify right side
    78,161.31x = 5,705,609,134.44
  5. Step 5: Solve for x
    x = 5,705,609,134.44/78,161.31
  6. Step 6: Final answer
    x = 72,997.87

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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.