Home / 85,010.40-127,321.20-43,408.80

Finding the Fourth Proportional to 85,010.40, 127,321.20 and 43,408.80

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Solution

The fourth proportional to 85,010.40, 127,321.20 and 43,408.80 is: 65,013.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,010.40 : 127,321.20 = 43,408.80 : x
  2. Step 2: Convert to fraction form
    85,010.40/127,321.20 = 43,408.80/x
  3. Step 3: Cross multiply
    85,010.40x = 127,321.20 × 43,408.80
  4. Step 4: Simplify right side
    85,010.40x = 5,526,860,506.56
  5. Step 5: Solve for x
    x = 5,526,860,506.56/85,010.40
  6. Step 6: Final answer
    x = 65,013.93

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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.