Home / 78,285.09-117,448.83-55,824.15

Finding the Fourth Proportional to 78,285.09, 117,448.83 and 55,824.15

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Solution

The fourth proportional to 78,285.09, 117,448.83 and 55,824.15 is: 83,751.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,285.09 : 117,448.83 = 55,824.15 : x
  2. Step 2: Convert to fraction form
    78,285.09/117,448.83 = 55,824.15/x
  3. Step 3: Cross multiply
    78,285.09x = 117,448.83 × 55,824.15
  4. Step 4: Simplify right side
    78,285.09x = 6,556,481,103.24
  5. Step 5: Solve for x
    x = 6,556,481,103.24/78,285.09
  6. Step 6: Final answer
    x = 83,751.34

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1.5x scale

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.