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Finding the Fourth Proportional to 99,590, 137,437.08 and 54,880.88

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Solution

The fourth proportional to 99,590, 137,437.08 and 54,880.88 is: 75,737.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,590 : 137,437.08 = 54,880.88 : x
  2. Step 2: Convert to fraction form
    99,590/137,437.08 = 54,880.88/x
  3. Step 3: Cross multiply
    99,590x = 137,437.08 × 54,880.88
  4. Step 4: Simplify right side
    99,590x = 7,542,667,895.03
  5. Step 5: Solve for x
    x = 7,542,667,895.03/99,590
  6. Step 6: Final answer
    x = 75,737.20

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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.