Home / 45,631.54-68,436.78-20,654.79

Finding the Fourth Proportional to 45,631.54, 68,436.78 and 20,654.79

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Solution

The fourth proportional to 45,631.54, 68,436.78 and 20,654.79 is: 30,977.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,631.54 : 68,436.78 = 20,654.79 : x
  2. Step 2: Convert to fraction form
    45,631.54/68,436.78 = 20,654.79/x
  3. Step 3: Cross multiply
    45,631.54x = 68,436.78 × 20,654.79
  4. Step 4: Simplify right side
    45,631.54x = 1,413,547,319.18
  5. Step 5: Solve for x
    x = 1,413,547,319.18/45,631.54
  6. Step 6: Final answer
    x = 30,977.42

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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.