Home / 85,968.83-128,971.67-25,992.17

Finding the Fourth Proportional to 85,968.83, 128,971.67 and 25,992.17

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Solution

The fourth proportional to 85,968.83, 128,971.67 and 25,992.17 is: 38,993.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,968.83 : 128,971.67 = 25,992.17 : x
  2. Step 2: Convert to fraction form
    85,968.83/128,971.67 = 25,992.17/x
  3. Step 3: Cross multiply
    85,968.83x = 128,971.67 × 25,992.17
  4. Step 4: Simplify right side
    85,968.83x = 3,352,253,764.29
  5. Step 5: Solve for x
    x = 3,352,253,764.29/85,968.83
  6. Step 6: Final answer
    x = 38,993.83

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Double scale
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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.