Home / 78,111.22-117,166.84-21,949.06

Finding the Fourth Proportional to 78,111.22, 117,166.84 and 21,949.06

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Solution

The fourth proportional to 78,111.22, 117,166.84 and 21,949.06 is: 32,923.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,111.22 : 117,166.84 = 21,949.06 : x
  2. Step 2: Convert to fraction form
    78,111.22/117,166.84 = 21,949.06/x
  3. Step 3: Cross multiply
    78,111.22x = 117,166.84 × 21,949.06
  4. Step 4: Simplify right side
    78,111.22x = 2,571,702,092.76
  5. Step 5: Solve for x
    x = 2,571,702,092.76/78,111.22
  6. Step 6: Final answer
    x = 32,923.59

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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.