Home / 40,387-87,668

Finding the Third Proportional to 40,387 and 87,668

Calculator

Solution

The third proportional to 40,387 and 87,668 is: 190,300.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,387 : 87,668 = 87,668 : x
  2. Step 2: Convert to fraction form
    40,387/87,668 = 87,668/x
  3. Step 3: Cross multiply
    40,387x = 87,668 × 87,668
  4. Step 4: Simplify right side
    40,387x = 7,685,678,224
  5. Step 5: Solve for x
    x = 7,685,678,224/40,387
  6. Step 6: Final answer
    x = 190,300.80

Related Problems

Find third proportional to 20,193.50 and 43,834
Half scale
Find third proportional to 80,774 and 175,336
Double scale
Find third proportional to 40,389 and 87,672
Similar ratio
Find third proportional to 60,580.50 and 131,502
1.5x scale

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.