Home / 91,106.05-125,784.89-57,161.11

Finding the Fourth Proportional to 91,106.05, 125,784.89 and 57,161.11

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Solution

The fourth proportional to 91,106.05, 125,784.89 and 57,161.11 is: 78,919.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,106.05 : 125,784.89 = 57,161.11 : x
  2. Step 2: Convert to fraction form
    91,106.05/125,784.89 = 57,161.11/x
  3. Step 3: Cross multiply
    91,106.05x = 125,784.89 × 57,161.11
  4. Step 4: Simplify right side
    91,106.05x = 7,190,003,933.63
  5. Step 5: Solve for x
    x = 7,190,003,933.63/91,106.05
  6. Step 6: Final answer
    x = 78,919.06

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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.