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Finding the Fourth Proportional to 81,376.72, 122,101.93 and 48,161.59

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Solution

The fourth proportional to 81,376.72, 122,101.93 and 48,161.59 is: 72,264.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,376.72 : 122,101.93 = 48,161.59 : x
  2. Step 2: Convert to fraction form
    81,376.72/122,101.93 = 48,161.59/x
  3. Step 3: Cross multiply
    81,376.72x = 122,101.93 × 48,161.59
  4. Step 4: Simplify right side
    81,376.72x = 5,880,623,090.87
  5. Step 5: Solve for x
    x = 5,880,623,090.87/81,376.72
  6. Step 6: Final answer
    x = 72,264.19

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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.