Home / 72,933.13-100,647.80-39,399.13

Finding the Fourth Proportional to 72,933.13, 100,647.80 and 39,399.13

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Solution

The fourth proportional to 72,933.13, 100,647.80 and 39,399.13 is: 54,370.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,933.13 : 100,647.80 = 39,399.13 : x
  2. Step 2: Convert to fraction form
    72,933.13/100,647.80 = 39,399.13/x
  3. Step 3: Cross multiply
    72,933.13x = 100,647.80 × 39,399.13
  4. Step 4: Simplify right side
    72,933.13x = 3,965,435,756.41
  5. Step 5: Solve for x
    x = 3,965,435,756.41/72,933.13
  6. Step 6: Final answer
    x = 54,370.84

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1.5x scale

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.