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Finding the Fourth Proportional to 94,142.75, 129,928.52 and 54,398.75

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Solution

The fourth proportional to 94,142.75, 129,928.52 and 54,398.75 is: 75,076.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,142.75 : 129,928.52 = 54,398.75 : x
  2. Step 2: Convert to fraction form
    94,142.75/129,928.52 = 54,398.75/x
  3. Step 3: Cross multiply
    94,142.75x = 129,928.52 × 54,398.75
  4. Step 4: Simplify right side
    94,142.75x = 7,067,949,077.35
  5. Step 5: Solve for x
    x = 7,067,949,077.35/94,142.75
  6. Step 6: Final answer
    x = 75,076.93

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1.5x scale

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.