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Finding the Fourth Proportional to 69,970.62, 104,961.57 and 21,935.94

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Solution

The fourth proportional to 69,970.62, 104,961.57 and 21,935.94 is: 32,905.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,970.62 : 104,961.57 = 21,935.94 : x
  2. Step 2: Convert to fraction form
    69,970.62/104,961.57 = 21,935.94/x
  3. Step 3: Cross multiply
    69,970.62x = 104,961.57 × 21,935.94
  4. Step 4: Simplify right side
    69,970.62x = 2,302,430,701.83
  5. Step 5: Solve for x
    x = 2,302,430,701.83/69,970.62
  6. Step 6: Final answer
    x = 32,905.68

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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.