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Finding the Fourth Proportional to 69,798.95, 104,697.06 and 19,879.37

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Solution

The fourth proportional to 69,798.95, 104,697.06 and 19,879.37 is: 29,818.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,798.95 : 104,697.06 = 19,879.37 : x
  2. Step 2: Convert to fraction form
    69,798.95/104,697.06 = 19,879.37/x
  3. Step 3: Cross multiply
    69,798.95x = 104,697.06 × 19,879.37
  4. Step 4: Simplify right side
    69,798.95x = 2,081,311,070.17
  5. Step 5: Solve for x
    x = 2,081,311,070.17/69,798.95
  6. Step 6: Final answer
    x = 29,818.66

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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.