Home / 51,991.56-78,021.92-28,305.08

Finding the Fourth Proportional to 51,991.56, 78,021.92 and 28,305.08

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Solution

The fourth proportional to 51,991.56, 78,021.92 and 28,305.08 is: 42,476.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,991.56 : 78,021.92 = 28,305.08 : x
  2. Step 2: Convert to fraction form
    51,991.56/78,021.92 = 28,305.08/x
  3. Step 3: Cross multiply
    51,991.56x = 78,021.92 × 28,305.08
  4. Step 4: Simplify right side
    51,991.56x = 2,208,416,687.35
  5. Step 5: Solve for x
    x = 2,208,416,687.35/51,991.56
  6. Step 6: Final answer
    x = 42,476.45

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1.5x scale

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.