Home / 55,413-84,780

Finding the Third Proportional to 55,413 and 84,780

Calculator

Solution

The third proportional to 55,413 and 84,780 is: 129,710.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,413 : 84,780 = 84,780 : x
  2. Step 2: Convert to fraction form
    55,413/84,780 = 84,780/x
  3. Step 3: Cross multiply
    55,413x = 84,780 × 84,780
  4. Step 4: Simplify right side
    55,413x = 7,187,648,400
  5. Step 5: Solve for x
    x = 7,187,648,400/55,413
  6. Step 6: Final answer
    x = 129,710.51

Related Problems

Find third proportional to 27,706.50 and 42,390
Half scale
Find third proportional to 110,826 and 169,560
Double scale
Find third proportional to 55,415 and 84,783
Similar ratio
Find third proportional to 83,119.50 and 127,170
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.