Home / 78,201.54-117,284.20-46,620.45

Finding the Fourth Proportional to 78,201.54, 117,284.20 and 46,620.45

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Solution

The fourth proportional to 78,201.54, 117,284.20 and 46,620.45 is: 69,919.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,201.54 : 117,284.20 = 46,620.45 : x
  2. Step 2: Convert to fraction form
    78,201.54/117,284.20 = 46,620.45/x
  3. Step 3: Cross multiply
    78,201.54x = 117,284.20 × 46,620.45
  4. Step 4: Simplify right side
    78,201.54x = 5,467,842,065.34
  5. Step 5: Solve for x
    x = 5,467,842,065.34/78,201.54
  6. Step 6: Final answer
    x = 69,919.88

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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.