Home / 51,441.10-70,991.48-28,778.74

Finding the Fourth Proportional to 51,441.10, 70,991.48 and 28,778.74

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Solution

The fourth proportional to 51,441.10, 70,991.48 and 28,778.74 is: 39,716.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,441.10 : 70,991.48 = 28,778.74 : x
  2. Step 2: Convert to fraction form
    51,441.10/70,991.48 = 28,778.74/x
  3. Step 3: Cross multiply
    51,441.10x = 70,991.48 × 28,778.74
  4. Step 4: Simplify right side
    51,441.10x = 2,043,045,477.05
  5. Step 5: Solve for x
    x = 2,043,045,477.05/51,441.10
  6. Step 6: Final answer
    x = 39,716.21

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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.