Home / 78,361.02-108,091.26-73,112.22

Finding the Fourth Proportional to 78,361.02, 108,091.26 and 73,112.22

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Solution

The fourth proportional to 78,361.02, 108,091.26 and 73,112.22 is: 100,851.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,361.02 : 108,091.26 = 73,112.22 : x
  2. Step 2: Convert to fraction form
    78,361.02/108,091.26 = 73,112.22/x
  3. Step 3: Cross multiply
    78,361.02x = 108,091.26 × 73,112.22
  4. Step 4: Simplify right side
    78,361.02x = 7,902,791,981.20
  5. Step 5: Solve for x
    x = 7,902,791,981.20/78,361.02
  6. Step 6: Final answer
    x = 100,851.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.