Home / 45,431.16-68,197.86-19,158

Finding the Fourth Proportional to 45,431.16, 68,197.86 and 19,158

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Solution

The fourth proportional to 45,431.16, 68,197.86 and 19,158 is: 28,758.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,431.16 : 68,197.86 = 19,158 : x
  2. Step 2: Convert to fraction form
    45,431.16/68,197.86 = 19,158/x
  3. Step 3: Cross multiply
    45,431.16x = 68,197.86 × 19,158
  4. Step 4: Simplify right side
    45,431.16x = 1,306,534,601.88
  5. Step 5: Solve for x
    x = 1,306,534,601.88/45,431.16
  6. Step 6: Final answer
    x = 28,758.56

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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.