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Finding the Fourth Proportional to 69,212.88, 103,807.98 and 19,296.36

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Solution

The fourth proportional to 69,212.88, 103,807.98 and 19,296.36 is: 28,941.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,212.88 : 103,807.98 = 19,296.36 : x
  2. Step 2: Convert to fraction form
    69,212.88/103,807.98 = 19,296.36/x
  3. Step 3: Cross multiply
    69,212.88x = 103,807.98 × 19,296.36
  4. Step 4: Simplify right side
    69,212.88x = 2,003,116,152.95
  5. Step 5: Solve for x
    x = 2,003,116,152.95/69,212.88
  6. Step 6: Final answer
    x = 28,941.38

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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.