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Finding the Fourth Proportional to 78,615.39, 117,927.48 and 22,451.21

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Solution

The fourth proportional to 78,615.39, 117,927.48 and 22,451.21 is: 33,678.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,615.39 : 117,927.48 = 22,451.21 : x
  2. Step 2: Convert to fraction form
    78,615.39/117,927.48 = 22,451.21/x
  3. Step 3: Cross multiply
    78,615.39x = 117,927.48 × 22,451.21
  4. Step 4: Simplify right side
    78,615.39x = 2,647,614,028.61
  5. Step 5: Solve for x
    x = 2,647,614,028.61/78,615.39
  6. Step 6: Final answer
    x = 33,678.06

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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.