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Finding the Fourth Proportional to 66,144.59, 99,230.55 and 21,774.01

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Solution

The fourth proportional to 66,144.59, 99,230.55 and 21,774.01 is: 32,665.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,144.59 : 99,230.55 = 21,774.01 : x
  2. Step 2: Convert to fraction form
    66,144.59/99,230.55 = 21,774.01/x
  3. Step 3: Cross multiply
    66,144.59x = 99,230.55 × 21,774.01
  4. Step 4: Simplify right side
    66,144.59x = 2,160,646,573.51
  5. Step 5: Solve for x
    x = 2,160,646,573.51/66,144.59
  6. Step 6: Final answer
    x = 32,665.51

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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.