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Finding the Third Proportional to 36,240 and 78,511.50

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Solution

The third proportional to 36,240 and 78,511.50 is: 170,089.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,240 : 78,511.50 = 78,511.50 : x
  2. Step 2: Convert to fraction form
    36,240/78,511.50 = 78,511.50/x
  3. Step 3: Cross multiply
    36,240x = 78,511.50 × 78,511.50
  4. Step 4: Simplify right side
    36,240x = 6,164,055,632.25
  5. Step 5: Solve for x
    x = 6,164,055,632.25/36,240
  6. Step 6: Final answer
    x = 170,089.84

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.