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Finding the Fourth Proportional to 99,558.92, 137,387.22 and 54,236

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Solution

The fourth proportional to 99,558.92, 137,387.22 and 54,236 is: 74,843.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,558.92 : 137,387.22 = 54,236 : x
  2. Step 2: Convert to fraction form
    99,558.92/137,387.22 = 54,236/x
  3. Step 3: Cross multiply
    99,558.92x = 137,387.22 × 54,236
  4. Step 4: Simplify right side
    99,558.92x = 7,451,333,263.92
  5. Step 5: Solve for x
    x = 7,451,333,263.92/99,558.92
  6. Step 6: Final answer
    x = 74,843.45

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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.