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Finding the Fourth Proportional to 78,662.99, 117,992.32 and 19,497.35

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Solution

The fourth proportional to 78,662.99, 117,992.32 and 19,497.35 is: 29,245.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,662.99 : 117,992.32 = 19,497.35 : x
  2. Step 2: Convert to fraction form
    78,662.99/117,992.32 = 19,497.35/x
  3. Step 3: Cross multiply
    78,662.99x = 117,992.32 × 19,497.35
  4. Step 4: Simplify right side
    78,662.99x = 2,300,536,872.90
  5. Step 5: Solve for x
    x = 2,300,536,872.90/78,662.99
  6. Step 6: Final answer
    x = 29,245.48

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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.