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Finding the Fourth Proportional to 66,580.53, 99,865.29 and 19,833.39

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Solution

The fourth proportional to 66,580.53, 99,865.29 and 19,833.39 is: 29,748.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,580.53 : 99,865.29 = 19,833.39 : x
  2. Step 2: Convert to fraction form
    66,580.53/99,865.29 = 19,833.39/x
  3. Step 3: Cross multiply
    66,580.53x = 99,865.29 × 19,833.39
  4. Step 4: Simplify right side
    66,580.53x = 1,980,667,244.03
  5. Step 5: Solve for x
    x = 1,980,667,244.03/66,580.53
  6. Step 6: Final answer
    x = 29,748.45

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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.