Home / 71,145.99-98,178.27-39,314.21

Finding the Fourth Proportional to 71,145.99, 98,178.27 and 39,314.21

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Solution

The fourth proportional to 71,145.99, 98,178.27 and 39,314.21 is: 54,251.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,145.99 : 98,178.27 = 39,314.21 : x
  2. Step 2: Convert to fraction form
    71,145.99/98,178.27 = 39,314.21/x
  3. Step 3: Cross multiply
    71,145.99x = 98,178.27 × 39,314.21
  4. Step 4: Simplify right side
    71,145.99x = 3,859,800,633.33
  5. Step 5: Solve for x
    x = 3,859,800,633.33/71,145.99
  6. Step 6: Final answer
    x = 54,251.84

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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.