Home / 81,485.56-122,209.48-31,549.04

Finding the Fourth Proportional to 81,485.56, 122,209.48 and 31,549.04

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Solution

The fourth proportional to 81,485.56, 122,209.48 and 31,549.04 is: 47,316.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,485.56 : 122,209.48 = 31,549.04 : x
  2. Step 2: Convert to fraction form
    81,485.56/122,209.48 = 31,549.04/x
  3. Step 3: Cross multiply
    81,485.56x = 122,209.48 × 31,549.04
  4. Step 4: Simplify right side
    81,485.56x = 3,855,591,772.90
  5. Step 5: Solve for x
    x = 3,855,591,772.90/81,485.56
  6. Step 6: Final answer
    x = 47,316.26

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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.