Home / 78,359.06-117,546.78-25,772.64

Finding the Fourth Proportional to 78,359.06, 117,546.78 and 25,772.64

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Solution

The fourth proportional to 78,359.06, 117,546.78 and 25,772.64 is: 38,661.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,359.06 : 117,546.78 = 25,772.64 : x
  2. Step 2: Convert to fraction form
    78,359.06/117,546.78 = 25,772.64/x
  3. Step 3: Cross multiply
    78,359.06x = 117,546.78 × 25,772.64
  4. Step 4: Simplify right side
    78,359.06x = 3,029,490,940.75
  5. Step 5: Solve for x
    x = 3,029,490,940.75/78,359.06
  6. Step 6: Final answer
    x = 38,661.66

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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.