Home / 39,890.54-55,063.04-35,634.21

Finding the Fourth Proportional to 39,890.54, 55,063.04 and 35,634.21

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Solution

The fourth proportional to 39,890.54, 55,063.04 and 35,634.21 is: 49,187.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,890.54 : 55,063.04 = 35,634.21 : x
  2. Step 2: Convert to fraction form
    39,890.54/55,063.04 = 35,634.21/x
  3. Step 3: Cross multiply
    39,890.54x = 55,063.04 × 35,634.21
  4. Step 4: Simplify right side
    39,890.54x = 1,962,127,752.43
  5. Step 5: Solve for x
    x = 1,962,127,752.43/39,890.54
  6. Step 6: Final answer
    x = 49,187.80

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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.