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Finding the Fourth Proportional to 88,400.90, 121,997.22 and 54,410.96

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Solution

The fourth proportional to 88,400.90, 121,997.22 and 54,410.96 is: 75,089.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,400.90 : 121,997.22 = 54,410.96 : x
  2. Step 2: Convert to fraction form
    88,400.90/121,997.22 = 54,410.96/x
  3. Step 3: Cross multiply
    88,400.90x = 121,997.22 × 54,410.96
  4. Step 4: Simplify right side
    88,400.90x = 6,637,985,857.53
  5. Step 5: Solve for x
    x = 6,637,985,857.53/88,400.90
  6. Step 6: Final answer
    x = 75,089.57

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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.