Home / 85,942.08-128,919.33-35,971.92

Finding the Fourth Proportional to 85,942.08, 128,919.33 and 35,971.92

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Solution

The fourth proportional to 85,942.08, 128,919.33 and 35,971.92 is: 53,960.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,942.08 : 128,919.33 = 35,971.92 : x
  2. Step 2: Convert to fraction form
    85,942.08/128,919.33 = 35,971.92/x
  3. Step 3: Cross multiply
    85,942.08x = 128,919.33 × 35,971.92
  4. Step 4: Simplify right side
    85,942.08x = 4,637,475,825.21
  5. Step 5: Solve for x
    x = 4,637,475,825.21/85,942.08
  6. Step 6: Final answer
    x = 53,960.48

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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.