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Finding the Fourth Proportional to 72,363.36, 107,834.40 and 69,984.96

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Solution

The fourth proportional to 72,363.36, 107,834.40 and 69,984.96 is: 104,290.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,363.36 : 107,834.40 = 69,984.96 : x
  2. Step 2: Convert to fraction form
    72,363.36/107,834.40 = 69,984.96/x
  3. Step 3: Cross multiply
    72,363.36x = 107,834.40 × 69,984.96
  4. Step 4: Simplify right side
    72,363.36x = 7,546,786,170.62
  5. Step 5: Solve for x
    x = 7,546,786,170.62/72,363.36
  6. Step 6: Final answer
    x = 104,290.16

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.