Home / 78,733.08-117,989.10-43,102.80

Finding the Fourth Proportional to 78,733.08, 117,989.10 and 43,102.80

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Solution

The fourth proportional to 78,733.08, 117,989.10 and 43,102.80 is: 64,593.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,733.08 : 117,989.10 = 43,102.80 : x
  2. Step 2: Convert to fraction form
    78,733.08/117,989.10 = 43,102.80/x
  3. Step 3: Cross multiply
    78,733.08x = 117,989.10 × 43,102.80
  4. Step 4: Simplify right side
    78,733.08x = 5,085,660,579.48
  5. Step 5: Solve for x
    x = 5,085,660,579.48/78,733.08
  6. Step 6: Final answer
    x = 64,593.70

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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.