Home / 51,286.75-70,778.16-28,930.75

Finding the Fourth Proportional to 51,286.75, 70,778.16 and 28,930.75

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Solution

The fourth proportional to 51,286.75, 70,778.16 and 28,930.75 is: 39,925.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,286.75 : 70,778.16 = 28,930.75 : x
  2. Step 2: Convert to fraction form
    51,286.75/70,778.16 = 28,930.75/x
  3. Step 3: Cross multiply
    51,286.75x = 70,778.16 × 28,930.75
  4. Step 4: Simplify right side
    51,286.75x = 2,047,665,252.42
  5. Step 5: Solve for x
    x = 2,047,665,252.42/51,286.75
  6. Step 6: Final answer
    x = 39,925.81

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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.