Home / 49,976.40-68,970-28,758.84

Finding the Fourth Proportional to 49,976.40, 68,970 and 28,758.84

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Solution

The fourth proportional to 49,976.40, 68,970 and 28,758.84 is: 39,688.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,976.40 : 68,970 = 28,758.84 : x
  2. Step 2: Convert to fraction form
    49,976.40/68,970 = 28,758.84/x
  3. Step 3: Cross multiply
    49,976.40x = 68,970 × 28,758.84
  4. Step 4: Simplify right side
    49,976.40x = 1,983,497,194.80
  5. Step 5: Solve for x
    x = 1,983,497,194.80/49,976.40
  6. Step 6: Final answer
    x = 39,688.68

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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.