Home / 85,822.80-128,735.40-26,654.73

Finding the Fourth Proportional to 85,822.80, 128,735.40 and 26,654.73

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Solution

The fourth proportional to 85,822.80, 128,735.40 and 26,654.73 is: 39,982.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,822.80 : 128,735.40 = 26,654.73 : x
  2. Step 2: Convert to fraction form
    85,822.80/128,735.40 = 26,654.73/x
  3. Step 3: Cross multiply
    85,822.80x = 128,735.40 × 26,654.73
  4. Step 4: Simplify right side
    85,822.80x = 3,431,407,328.44
  5. Step 5: Solve for x
    x = 3,431,407,328.44/85,822.80
  6. Step 6: Final answer
    x = 39,982.47

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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.