Home / 56,435.34-84,620.61-16,980.78

Finding the Fourth Proportional to 56,435.34, 84,620.61 and 16,980.78

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Solution

The fourth proportional to 56,435.34, 84,620.61 and 16,980.78 is: 25,461.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,435.34 : 84,620.61 = 16,980.78 : x
  2. Step 2: Convert to fraction form
    56,435.34/84,620.61 = 16,980.78/x
  3. Step 3: Cross multiply
    56,435.34x = 84,620.61 × 16,980.78
  4. Step 4: Simplify right side
    56,435.34x = 1,436,923,961.88
  5. Step 5: Solve for x
    x = 1,436,923,961.88/56,435.34
  6. Step 6: Final answer
    x = 25,461.42

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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.