Home / 81,512.73-122,239.26-28,191.24

Finding the Fourth Proportional to 81,512.73, 122,239.26 and 28,191.24

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Solution

The fourth proportional to 81,512.73, 122,239.26 and 28,191.24 is: 42,276.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,512.73 : 122,239.26 = 28,191.24 : x
  2. Step 2: Convert to fraction form
    81,512.73/122,239.26 = 28,191.24/x
  3. Step 3: Cross multiply
    81,512.73x = 122,239.26 × 28,191.24
  4. Step 4: Simplify right side
    81,512.73x = 3,446,076,316.08
  5. Step 5: Solve for x
    x = 3,446,076,316.08/81,512.73
  6. Step 6: Final answer
    x = 42,276.54

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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.