Home / 78,734.08-117,990.60-43,103.80

Finding the Fourth Proportional to 78,734.08, 117,990.60 and 43,103.80

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Solution

The fourth proportional to 78,734.08, 117,990.60 and 43,103.80 is: 64,595.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,734.08 : 117,990.60 = 43,103.80 : x
  2. Step 2: Convert to fraction form
    78,734.08/117,990.60 = 43,103.80/x
  3. Step 3: Cross multiply
    78,734.08x = 117,990.60 × 43,103.80
  4. Step 4: Simplify right side
    78,734.08x = 5,085,843,224.28
  5. Step 5: Solve for x
    x = 5,085,843,224.28/78,734.08
  6. Step 6: Final answer
    x = 64,595.19

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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.