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Finding the Fourth Proportional to 78,914.98, 118,372.92 and 26,324.31

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Solution

The fourth proportional to 78,914.98, 118,372.92 and 26,324.31 is: 39,486.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,914.98 : 118,372.92 = 26,324.31 : x
  2. Step 2: Convert to fraction form
    78,914.98/118,372.92 = 26,324.31/x
  3. Step 3: Cross multiply
    78,914.98x = 118,372.92 × 26,324.31
  4. Step 4: Simplify right side
    78,914.98x = 3,116,085,441.69
  5. Step 5: Solve for x
    x = 3,116,085,441.69/78,914.98
  6. Step 6: Final answer
    x = 39,486.62

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1.5x scale

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.