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Finding the Fourth Proportional to 84,919.39, 127,379.39 and 25,755.57

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Solution

The fourth proportional to 84,919.39, 127,379.39 and 25,755.57 is: 38,633.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,919.39 : 127,379.39 = 25,755.57 : x
  2. Step 2: Convert to fraction form
    84,919.39/127,379.39 = 25,755.57/x
  3. Step 3: Cross multiply
    84,919.39x = 127,379.39 × 25,755.57
  4. Step 4: Simplify right side
    84,919.39x = 3,280,728,666.92
  5. Step 5: Solve for x
    x = 3,280,728,666.92/84,919.39
  6. Step 6: Final answer
    x = 38,633.45

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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.