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Finding the Fourth Proportional to 99,808.66, 149,606.37 and 49,790.15

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Solution

The fourth proportional to 99,808.66, 149,606.37 and 49,790.15 is: 74,632.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,808.66 : 149,606.37 = 49,790.15 : x
  2. Step 2: Convert to fraction form
    99,808.66/149,606.37 = 49,790.15/x
  3. Step 3: Cross multiply
    99,808.66x = 149,606.37 × 49,790.15
  4. Step 4: Simplify right side
    99,808.66x = 7,448,922,855.22
  5. Step 5: Solve for x
    x = 7,448,922,855.22/99,808.66
  6. Step 6: Final answer
    x = 74,632.03

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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.