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Finding the Fourth Proportional to 61,297.97, 91,819.37 and 39,000.89

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Solution

The fourth proportional to 61,297.97, 91,819.37 and 39,000.89 is: 58,420.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,297.97 : 91,819.37 = 39,000.89 : x
  2. Step 2: Convert to fraction form
    61,297.97/91,819.37 = 39,000.89/x
  3. Step 3: Cross multiply
    61,297.97x = 91,819.37 × 39,000.89
  4. Step 4: Simplify right side
    61,297.97x = 3,581,037,476.29
  5. Step 5: Solve for x
    x = 3,581,037,476.29/61,297.97
  6. Step 6: Final answer
    x = 58,420.17

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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.