Home / 51,405.50-70,939.19-28,744.54

Finding the Fourth Proportional to 51,405.50, 70,939.19 and 28,744.54

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Solution

The fourth proportional to 51,405.50, 70,939.19 and 28,744.54 is: 39,667.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,405.50 : 70,939.19 = 28,744.54 : x
  2. Step 2: Convert to fraction form
    51,405.50/70,939.19 = 28,744.54/x
  3. Step 3: Cross multiply
    51,405.50x = 70,939.19 × 28,744.54
  4. Step 4: Simplify right side
    51,405.50x = 2,039,114,279.04
  5. Step 5: Solve for x
    x = 2,039,114,279.04/51,405.50
  6. Step 6: Final answer
    x = 39,667.24

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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.