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Finding the Fourth Proportional to 47,804.10, 71,695.90 and 19,716.87

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Solution

The fourth proportional to 47,804.10, 71,695.90 and 19,716.87 is: 29,571.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,804.10 : 71,695.90 = 19,716.87 : x
  2. Step 2: Convert to fraction form
    47,804.10/71,695.90 = 19,716.87/x
  3. Step 3: Cross multiply
    47,804.10x = 71,695.90 × 19,716.87
  4. Step 4: Simplify right side
    47,804.10x = 1,413,618,739.83
  5. Step 5: Solve for x
    x = 1,413,618,739.83/47,804.10
  6. Step 6: Final answer
    x = 29,571.08

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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.