Home / 49,776.20-74,664.30-20,178.80

Finding the Fourth Proportional to 49,776.20, 74,664.30 and 20,178.80

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Solution

The fourth proportional to 49,776.20, 74,664.30 and 20,178.80 is: 30,268.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,776.20 : 74,664.30 = 20,178.80 : x
  2. Step 2: Convert to fraction form
    49,776.20/74,664.30 = 20,178.80/x
  3. Step 3: Cross multiply
    49,776.20x = 74,664.30 × 20,178.80
  4. Step 4: Simplify right side
    49,776.20x = 1,506,635,976.84
  5. Step 5: Solve for x
    x = 1,506,635,976.84/49,776.20
  6. Step 6: Final answer
    x = 30,268.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.