Home / 42,009-66,551

Finding the Third Proportional to 42,009 and 66,551

Calculator

Solution

The third proportional to 42,009 and 66,551 is: 105,430.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,009 : 66,551 = 66,551 : x
  2. Step 2: Convert to fraction form
    42,009/66,551 = 66,551/x
  3. Step 3: Cross multiply
    42,009x = 66,551 × 66,551
  4. Step 4: Simplify right side
    42,009x = 4,429,035,601
  5. Step 5: Solve for x
    x = 4,429,035,601/42,009
  6. Step 6: Final answer
    x = 105,430.64

Related Problems

Find third proportional to 21,004.50 and 33,275.50
Half scale
Find third proportional to 84,018 and 133,102
Double scale
Find third proportional to 42,011 and 66,554
Similar ratio
Find third proportional to 63,013.50 and 99,826.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.