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Finding the Fourth Proportional to 66,129.30, 99,174.51 and 36,109.08

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Solution

The fourth proportional to 66,129.30, 99,174.51 and 36,109.08 is: 54,153.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,129.30 : 99,174.51 = 36,109.08 : x
  2. Step 2: Convert to fraction form
    66,129.30/99,174.51 = 36,109.08/x
  3. Step 3: Cross multiply
    66,129.30x = 99,174.51 × 36,109.08
  4. Step 4: Simplify right side
    66,129.30x = 3,581,100,315.55
  5. Step 5: Solve for x
    x = 3,581,100,315.55/66,129.30
  6. Step 6: Final answer
    x = 54,153.01

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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.