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Finding the Fourth Proportional to 66,267.73, 91,451.99 and 37,978.89

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Solution

The fourth proportional to 66,267.73, 91,451.99 and 37,978.89 is: 52,412.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,267.73 : 91,451.99 = 37,978.89 : x
  2. Step 2: Convert to fraction form
    66,267.73/91,451.99 = 37,978.89/x
  3. Step 3: Cross multiply
    66,267.73x = 91,451.99 × 37,978.89
  4. Step 4: Simplify right side
    66,267.73x = 3,473,245,068.49
  5. Step 5: Solve for x
    x = 3,473,245,068.49/66,267.73
  6. Step 6: Final answer
    x = 52,412.31

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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.