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Finding the Fourth Proportional to 69,242.83, 103,881.78 and 19,322.92

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Solution

The fourth proportional to 69,242.83, 103,881.78 and 19,322.92 is: 28,989.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,242.83 : 103,881.78 = 19,322.92 : x
  2. Step 2: Convert to fraction form
    69,242.83/103,881.78 = 19,322.92/x
  3. Step 3: Cross multiply
    69,242.83x = 103,881.78 × 19,322.92
  4. Step 4: Simplify right side
    69,242.83x = 2,007,299,584.10
  5. Step 5: Solve for x
    x = 2,007,299,584.10/69,242.83
  6. Step 6: Final answer
    x = 28,989.28

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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.