Home / 85,945.05-128,935.80-25,968.60

Finding the Fourth Proportional to 85,945.05, 128,935.80 and 25,968.60

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Solution

The fourth proportional to 85,945.05, 128,935.80 and 25,968.60 is: 38,958.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,945.05 : 128,935.80 = 25,968.60 : x
  2. Step 2: Convert to fraction form
    85,945.05/128,935.80 = 25,968.60/x
  3. Step 3: Cross multiply
    85,945.05x = 128,935.80 × 25,968.60
  4. Step 4: Simplify right side
    85,945.05x = 3,348,282,215.88
  5. Step 5: Solve for x
    x = 3,348,282,215.88/85,945.05
  6. Step 6: Final answer
    x = 38,958.41

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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.