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Finding the Fourth Proportional to 66,495.88, 91,773.12 and 42,299.08

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Solution

The fourth proportional to 66,495.88, 91,773.12 and 42,299.08 is: 58,378.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,495.88 : 91,773.12 = 42,299.08 : x
  2. Step 2: Convert to fraction form
    66,495.88/91,773.12 = 42,299.08/x
  3. Step 3: Cross multiply
    66,495.88x = 91,773.12 × 42,299.08
  4. Step 4: Simplify right side
    66,495.88x = 3,881,918,544.73
  5. Step 5: Solve for x
    x = 3,881,918,544.73/66,495.88
  6. Step 6: Final answer
    x = 58,378.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.