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Finding the Fourth Proportional to 94,168, 129,963.39 and 54,424

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Solution

The fourth proportional to 94,168, 129,963.39 and 54,424 is: 75,111.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,168 : 129,963.39 = 54,424 : x
  2. Step 2: Convert to fraction form
    94,168/129,963.39 = 54,424/x
  3. Step 3: Cross multiply
    94,168x = 129,963.39 × 54,424
  4. Step 4: Simplify right side
    94,168x = 7,073,127,537.36
  5. Step 5: Solve for x
    x = 7,073,127,537.36/94,168
  6. Step 6: Final answer
    x = 75,111.80

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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.