Home / 49,419.12-74,106.24-21,325.86

Finding the Fourth Proportional to 49,419.12, 74,106.24 and 21,325.86

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Solution

The fourth proportional to 49,419.12, 74,106.24 and 21,325.86 is: 31,979.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,419.12 : 74,106.24 = 21,325.86 : x
  2. Step 2: Convert to fraction form
    49,419.12/74,106.24 = 21,325.86/x
  3. Step 3: Cross multiply
    49,419.12x = 74,106.24 × 21,325.86
  4. Step 4: Simplify right side
    49,419.12x = 1,580,379,299.37
  5. Step 5: Solve for x
    x = 1,580,379,299.37/49,419.12
  6. Step 6: Final answer
    x = 31,979.11

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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.