Home / 78,586.36-117,867.84-25,996.12

Finding the Fourth Proportional to 78,586.36, 117,867.84 and 25,996.12

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Solution

The fourth proportional to 78,586.36, 117,867.84 and 25,996.12 is: 38,990.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,586.36 : 117,867.84 = 25,996.12 : x
  2. Step 2: Convert to fraction form
    78,586.36/117,867.84 = 25,996.12/x
  3. Step 3: Cross multiply
    78,586.36x = 117,867.84 × 25,996.12
  4. Step 4: Simplify right side
    78,586.36x = 3,064,106,512.78
  5. Step 5: Solve for x
    x = 3,064,106,512.78/78,586.36
  6. Step 6: Final answer
    x = 38,990.31

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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.