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Finding the Fourth Proportional to 99,555.42, 149,334.65 and 36,388.38

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Solution

The fourth proportional to 99,555.42, 149,334.65 and 36,388.38 is: 54,583.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,555.42 : 149,334.65 = 36,388.38 : x
  2. Step 2: Convert to fraction form
    99,555.42/149,334.65 = 36,388.38/x
  3. Step 3: Cross multiply
    99,555.42x = 149,334.65 × 36,388.38
  4. Step 4: Simplify right side
    99,555.42x = 5,434,045,991.37
  5. Step 5: Solve for x
    x = 5,434,045,991.37/99,555.42
  6. Step 6: Final answer
    x = 54,583.13

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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.