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Finding the Fourth Proportional to 86,511.85, 129,768.85 and 27,352.69

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Solution

The fourth proportional to 86,511.85, 129,768.85 and 27,352.69 is: 41,029.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,511.85 : 129,768.85 = 27,352.69 : x
  2. Step 2: Convert to fraction form
    86,511.85/129,768.85 = 27,352.69/x
  3. Step 3: Cross multiply
    86,511.85x = 129,768.85 × 27,352.69
  4. Step 4: Simplify right side
    86,511.85x = 3,549,526,835.48
  5. Step 5: Solve for x
    x = 3,549,526,835.48/86,511.85
  6. Step 6: Final answer
    x = 41,029.37

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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.