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Finding the Fourth Proportional to 99,715.44, 149,448.43 and 49,809.47

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Solution

The fourth proportional to 99,715.44, 149,448.43 and 49,809.47 is: 74,651.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,715.44 : 149,448.43 = 49,809.47 : x
  2. Step 2: Convert to fraction form
    99,715.44/149,448.43 = 49,809.47/x
  3. Step 3: Cross multiply
    99,715.44x = 149,448.43 × 49,809.47
  4. Step 4: Simplify right side
    99,715.44x = 7,443,947,090.63
  5. Step 5: Solve for x
    x = 7,443,947,090.63/99,715.44
  6. Step 6: Final answer
    x = 74,651.90

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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.