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Finding the Fourth Proportional to 61,270.17, 91,905.26 and 19,717.17

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Solution

The fourth proportional to 61,270.17, 91,905.26 and 19,717.17 is: 29,575.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,270.17 : 91,905.26 = 19,717.17 : x
  2. Step 2: Convert to fraction form
    61,270.17/91,905.26 = 19,717.17/x
  3. Step 3: Cross multiply
    61,270.17x = 91,905.26 × 19,717.17
  4. Step 4: Simplify right side
    61,270.17x = 1,812,111,764.51
  5. Step 5: Solve for x
    x = 1,812,111,764.51/61,270.17
  6. Step 6: Final answer
    x = 29,575.76

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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.