Home / 78,274.26-117,416.27-22,118.67

Finding the Fourth Proportional to 78,274.26, 117,416.27 and 22,118.67

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Solution

The fourth proportional to 78,274.26, 117,416.27 and 22,118.67 is: 33,179.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,274.26 : 117,416.27 = 22,118.67 : x
  2. Step 2: Convert to fraction form
    78,274.26/117,416.27 = 22,118.67/x
  3. Step 3: Cross multiply
    78,274.26x = 117,416.27 × 22,118.67
  4. Step 4: Simplify right side
    78,274.26x = 2,597,091,031.09
  5. Step 5: Solve for x
    x = 2,597,091,031.09/78,274.26
  6. Step 6: Final answer
    x = 33,179.38

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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.