Home / 73.79-101.76-53.20

Finding the Fourth Proportional to 73.79, 101.76 and 53.20

Calculator

Solution

The fourth proportional to 73.79, 101.76 and 53.20 is: 73.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.79 : 101.76 = 53.20 : x
  2. Step 2: Convert to fraction form
    73.79/101.76 = 53.20/x
  3. Step 3: Cross multiply
    73.79x = 101.76 × 53.20
  4. Step 4: Simplify right side
    73.79x = 5,413.63
  5. Step 5: Solve for x
    x = 5,413.63/73.79
  6. Step 6: Final answer
    x = 73.37

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.