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Finding the Fourth Proportional to 76,808.25, 115,212.44 and 21,404.25

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Solution

The fourth proportional to 76,808.25, 115,212.44 and 21,404.25 is: 32,106.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,808.25 : 115,212.44 = 21,404.25 : x
  2. Step 2: Convert to fraction form
    76,808.25/115,212.44 = 21,404.25/x
  3. Step 3: Cross multiply
    76,808.25x = 115,212.44 × 21,404.25
  4. Step 4: Simplify right side
    76,808.25x = 2,466,035,922.38
  5. Step 5: Solve for x
    x = 2,466,035,922.38/76,808.25
  6. Step 6: Final answer
    x = 32,106.39

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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.