Home / 81,455.20-122,201.92-25,292.40

Finding the Fourth Proportional to 81,455.20, 122,201.92 and 25,292.40

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Solution

The fourth proportional to 81,455.20, 122,201.92 and 25,292.40 is: 37,944.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,455.20 : 122,201.92 = 25,292.40 : x
  2. Step 2: Convert to fraction form
    81,455.20/122,201.92 = 25,292.40/x
  3. Step 3: Cross multiply
    81,455.20x = 122,201.92 × 25,292.40
  4. Step 4: Simplify right side
    81,455.20x = 3,090,779,841.41
  5. Step 5: Solve for x
    x = 3,090,779,841.41/81,455.20
  6. Step 6: Final answer
    x = 37,944.54

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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.