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Finding the Fourth Proportional to 99,592.36, 137,436.78 and 54,880.36

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Solution

The fourth proportional to 99,592.36, 137,436.78 and 54,880.36 is: 75,734.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,592.36 : 137,436.78 = 54,880.36 : x
  2. Step 2: Convert to fraction form
    99,592.36/137,436.78 = 54,880.36/x
  3. Step 3: Cross multiply
    99,592.36x = 137,436.78 × 54,880.36
  4. Step 4: Simplify right side
    99,592.36x = 7,542,579,963.64
  5. Step 5: Solve for x
    x = 7,542,579,963.64/99,592.36
  6. Step 6: Final answer
    x = 75,734.52

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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.