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Finding the Fourth Proportional to 85,998.27, 128,992.85 and 26,827.16

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Solution

The fourth proportional to 85,998.27, 128,992.85 and 26,827.16 is: 40,239.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,998.27 : 128,992.85 = 26,827.16 : x
  2. Step 2: Convert to fraction form
    85,998.27/128,992.85 = 26,827.16/x
  3. Step 3: Cross multiply
    85,998.27x = 128,992.85 × 26,827.16
  4. Step 4: Simplify right side
    85,998.27x = 3,460,511,825.81
  5. Step 5: Solve for x
    x = 3,460,511,825.81/85,998.27
  6. Step 6: Final answer
    x = 40,239.32

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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.