Home / 85,998.08-128,992.57-26,826.98

Finding the Fourth Proportional to 85,998.08, 128,992.57 and 26,826.98

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Solution

The fourth proportional to 85,998.08, 128,992.57 and 26,826.98 is: 40,239.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,998.08 : 128,992.57 = 26,826.98 : x
  2. Step 2: Convert to fraction form
    85,998.08/128,992.57 = 26,826.98/x
  3. Step 3: Cross multiply
    85,998.08x = 128,992.57 × 26,826.98
  4. Step 4: Simplify right side
    85,998.08x = 3,460,480,383.51
  5. Step 5: Solve for x
    x = 3,460,480,383.51/85,998.08
  6. Step 6: Final answer
    x = 40,239.04

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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.