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Finding the Fourth Proportional to 109,316.82, 150,857.74 and 61,571.02

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Solution

The fourth proportional to 109,316.82, 150,857.74 and 61,571.02 is: 84,968.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,316.82 : 150,857.74 = 61,571.02 : x
  2. Step 2: Convert to fraction form
    109,316.82/150,857.74 = 61,571.02/x
  3. Step 3: Cross multiply
    109,316.82x = 150,857.74 × 61,571.02
  4. Step 4: Simplify right side
    109,316.82x = 9,288,464,926.69
  5. Step 5: Solve for x
    x = 9,288,464,926.69/109,316.82
  6. Step 6: Final answer
    x = 84,968.31

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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.