Home / 78,500.76-117,712.26-33,515.08

Finding the Fourth Proportional to 78,500.76, 117,712.26 and 33,515.08

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Solution

The fourth proportional to 78,500.76, 117,712.26 and 33,515.08 is: 50,256.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,500.76 : 117,712.26 = 33,515.08 : x
  2. Step 2: Convert to fraction form
    78,500.76/117,712.26 = 33,515.08/x
  3. Step 3: Cross multiply
    78,500.76x = 117,712.26 × 33,515.08
  4. Step 4: Simplify right side
    78,500.76x = 3,945,135,810.88
  5. Step 5: Solve for x
    x = 3,945,135,810.88/78,500.76
  6. Step 6: Final answer
    x = 50,256.02

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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.