Home / 81,636.72-122,455.08-26,237.04

Finding the Fourth Proportional to 81,636.72, 122,455.08 and 26,237.04

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Solution

The fourth proportional to 81,636.72, 122,455.08 and 26,237.04 is: 39,355.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,636.72 : 122,455.08 = 26,237.04 : x
  2. Step 2: Convert to fraction form
    81,636.72/122,455.08 = 26,237.04/x
  3. Step 3: Cross multiply
    81,636.72x = 122,455.08 × 26,237.04
  4. Step 4: Simplify right side
    81,636.72x = 3,212,858,832.16
  5. Step 5: Solve for x
    x = 3,212,858,832.16/81,636.72
  6. Step 6: Final answer
    x = 39,355.56

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1.5x scale

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.