Home / 81,583.52-122,302.80-28,986.08

Finding the Fourth Proportional to 81,583.52, 122,302.80 and 28,986.08

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Solution

The fourth proportional to 81,583.52, 122,302.80 and 28,986.08 is: 43,453.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,583.52 : 122,302.80 = 28,986.08 : x
  2. Step 2: Convert to fraction form
    81,583.52/122,302.80 = 28,986.08/x
  3. Step 3: Cross multiply
    81,583.52x = 122,302.80 × 28,986.08
  4. Step 4: Simplify right side
    81,583.52x = 3,545,078,745.02
  5. Step 5: Solve for x
    x = 3,545,078,745.02/81,583.52
  6. Step 6: Final answer
    x = 43,453.37

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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.