Home / 39,780-87,558

Finding the Third Proportional to 39,780 and 87,558

Calculator

Solution

The third proportional to 39,780 and 87,558 is: 192,720.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,780 : 87,558 = 87,558 : x
  2. Step 2: Convert to fraction form
    39,780/87,558 = 87,558/x
  3. Step 3: Cross multiply
    39,780x = 87,558 × 87,558
  4. Step 4: Simplify right side
    39,780x = 7,666,403,364
  5. Step 5: Solve for x
    x = 7,666,403,364/39,780
  6. Step 6: Final answer
    x = 192,720.04

Related Problems

Find third proportional to 19,890 and 43,779
Half scale
Find third proportional to 79,560 and 175,116
Double scale
Find third proportional to 39,782 and 87,562
Similar ratio
Find third proportional to 59,670 and 131,337
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.