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Finding the Fourth Proportional to 61,754.30, 92,639.28 and 19,619.34

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Solution

The fourth proportional to 61,754.30, 92,639.28 and 19,619.34 is: 29,431.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,754.30 : 92,639.28 = 19,619.34 : x
  2. Step 2: Convert to fraction form
    61,754.30/92,639.28 = 19,619.34/x
  3. Step 3: Cross multiply
    61,754.30x = 92,639.28 × 19,619.34
  4. Step 4: Simplify right side
    61,754.30x = 1,817,521,531.68
  5. Step 5: Solve for x
    x = 1,817,521,531.68/61,754.30
  6. Step 6: Final answer
    x = 29,431.50

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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.