Home / 72,156.80-99,567.75-39,887.07

Finding the Fourth Proportional to 72,156.80, 99,567.75 and 39,887.07

Calculator

Solution

The fourth proportional to 72,156.80, 99,567.75 and 39,887.07 is: 55,039.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,156.80 : 99,567.75 = 39,887.07 : x
  2. Step 2: Convert to fraction form
    72,156.80/99,567.75 = 39,887.07/x
  3. Step 3: Cross multiply
    72,156.80x = 99,567.75 × 39,887.07
  4. Step 4: Simplify right side
    72,156.80x = 3,971,465,316.15
  5. Step 5: Solve for x
    x = 3,971,465,316.15/72,156.80
  6. Step 6: Final answer
    x = 55,039.38

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.