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Finding the Fourth Proportional to 98,363.75, 135,737.17 and 55,921.37

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Solution

The fourth proportional to 98,363.75, 135,737.17 and 55,921.37 is: 77,168.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,363.75 : 135,737.17 = 55,921.37 : x
  2. Step 2: Convert to fraction form
    98,363.75/135,737.17 = 55,921.37/x
  3. Step 3: Cross multiply
    98,363.75x = 135,737.17 × 55,921.37
  4. Step 4: Simplify right side
    98,363.75x = 7,590,607,687.83
  5. Step 5: Solve for x
    x = 7,590,607,687.83/98,363.75
  6. Step 6: Final answer
    x = 77,168.75

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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.