Home / 51,942.21-77,923.04-20,779.89

Finding the Fourth Proportional to 51,942.21, 77,923.04 and 20,779.89

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Solution

The fourth proportional to 51,942.21, 77,923.04 and 20,779.89 is: 31,173.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,942.21 : 77,923.04 = 20,779.89 : x
  2. Step 2: Convert to fraction form
    51,942.21/77,923.04 = 20,779.89/x
  3. Step 3: Cross multiply
    51,942.21x = 77,923.04 × 20,779.89
  4. Step 4: Simplify right side
    51,942.21x = 1,619,232,095.77
  5. Step 5: Solve for x
    x = 1,619,232,095.77/51,942.21
  6. Step 6: Final answer
    x = 31,173.72

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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.