Home / 78,177.25-117,282.43-30,147.09

Finding the Fourth Proportional to 78,177.25, 117,282.43 and 30,147.09

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Solution

The fourth proportional to 78,177.25, 117,282.43 and 30,147.09 is: 45,227.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,177.25 : 117,282.43 = 30,147.09 : x
  2. Step 2: Convert to fraction form
    78,177.25/117,282.43 = 30,147.09/x
  3. Step 3: Cross multiply
    78,177.25x = 117,282.43 × 30,147.09
  4. Step 4: Simplify right side
    78,177.25x = 3,535,723,570.50
  5. Step 5: Solve for x
    x = 3,535,723,570.50/78,177.25
  6. Step 6: Final answer
    x = 45,227.01

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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.