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Finding the Fourth Proportional to 128,573.47, 192,872.89 and 44,322.54

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Solution

The fourth proportional to 128,573.47, 192,872.89 and 44,322.54 is: 66,488.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,573.47 : 192,872.89 = 44,322.54 : x
  2. Step 2: Convert to fraction form
    128,573.47/192,872.89 = 44,322.54/x
  3. Step 3: Cross multiply
    128,573.47x = 192,872.89 × 44,322.54
  4. Step 4: Simplify right side
    128,573.47x = 8,548,616,381.94
  5. Step 5: Solve for x
    x = 8,548,616,381.94/128,573.47
  6. Step 6: Final answer
    x = 66,488.19

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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.