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Finding the Fourth Proportional to 101,778.57, 140,450.63 and 57,063.69

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Solution

The fourth proportional to 101,778.57, 140,450.63 and 57,063.69 is: 78,745.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,778.57 : 140,450.63 = 57,063.69 : x
  2. Step 2: Convert to fraction form
    101,778.57/140,450.63 = 57,063.69/x
  3. Step 3: Cross multiply
    101,778.57x = 140,450.63 × 57,063.69
  4. Step 4: Simplify right side
    101,778.57x = 8,014,630,925.31
  5. Step 5: Solve for x
    x = 8,014,630,925.31/101,778.57
  6. Step 6: Final answer
    x = 78,745.76

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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.