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Finding the Fourth Proportional to 99,483.78, 149,131.88 and 49,516.64

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Solution

The fourth proportional to 99,483.78, 149,131.88 and 49,516.64 is: 74,228.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,483.78 : 149,131.88 = 49,516.64 : x
  2. Step 2: Convert to fraction form
    99,483.78/149,131.88 = 49,516.64/x
  3. Step 3: Cross multiply
    99,483.78x = 149,131.88 × 49,516.64
  4. Step 4: Simplify right side
    99,483.78x = 7,384,508,621.24
  5. Step 5: Solve for x
    x = 7,384,508,621.24/99,483.78
  6. Step 6: Final answer
    x = 74,228.27

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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.