Home / 85,838.58-128,755.08-25,867.38

Finding the Fourth Proportional to 85,838.58, 128,755.08 and 25,867.38

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Solution

The fourth proportional to 85,838.58, 128,755.08 and 25,867.38 is: 38,800.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,838.58 : 128,755.08 = 25,867.38 : x
  2. Step 2: Convert to fraction form
    85,838.58/128,755.08 = 25,867.38/x
  3. Step 3: Cross multiply
    85,838.58x = 128,755.08 × 25,867.38
  4. Step 4: Simplify right side
    85,838.58x = 3,330,556,581.29
  5. Step 5: Solve for x
    x = 3,330,556,581.29/85,838.58
  6. Step 6: Final answer
    x = 38,800.23

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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.