Home / 78,271.45-117,397.60-33,310.91

Finding the Fourth Proportional to 78,271.45, 117,397.60 and 33,310.91

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Solution

The fourth proportional to 78,271.45, 117,397.60 and 33,310.91 is: 49,962.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,271.45 : 117,397.60 = 33,310.91 : x
  2. Step 2: Convert to fraction form
    78,271.45/117,397.60 = 33,310.91/x
  3. Step 3: Cross multiply
    78,271.45x = 117,397.60 × 33,310.91
  4. Step 4: Simplify right side
    78,271.45x = 3,910,620,887.82
  5. Step 5: Solve for x
    x = 3,910,620,887.82/78,271.45
  6. Step 6: Final answer
    x = 49,962.29

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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.