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Finding the Fourth Proportional to 51,603.54, 77,439.84 and 18,771.54

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Solution

The fourth proportional to 51,603.54, 77,439.84 and 18,771.54 is: 28,169.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,603.54 : 77,439.84 = 18,771.54 : x
  2. Step 2: Convert to fraction form
    51,603.54/77,439.84 = 18,771.54/x
  3. Step 3: Cross multiply
    51,603.54x = 77,439.84 × 18,771.54
  4. Step 4: Simplify right side
    51,603.54x = 1,453,665,054.15
  5. Step 5: Solve for x
    x = 1,453,665,054.15/51,603.54
  6. Step 6: Final answer
    x = 28,169.87

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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.