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Finding the Fourth Proportional to 69,804.42, 104,711.56 and 19,888.58

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Solution

The fourth proportional to 69,804.42, 104,711.56 and 19,888.58 is: 29,834.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,804.42 : 104,711.56 = 19,888.58 : x
  2. Step 2: Convert to fraction form
    69,804.42/104,711.56 = 19,888.58/x
  3. Step 3: Cross multiply
    69,804.42x = 104,711.56 × 19,888.58
  4. Step 4: Simplify right side
    69,804.42x = 2,082,563,664.71
  5. Step 5: Solve for x
    x = 2,082,563,664.71/69,804.42
  6. Step 6: Final answer
    x = 29,834.27

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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.