Home / 68,704.03-103,051.12-21,317.91

Finding the Fourth Proportional to 68,704.03, 103,051.12 and 21,317.91

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Solution

The fourth proportional to 68,704.03, 103,051.12 and 21,317.91 is: 31,975.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,704.03 : 103,051.12 = 21,317.91 : x
  2. Step 2: Convert to fraction form
    68,704.03/103,051.12 = 21,317.91/x
  3. Step 3: Cross multiply
    68,704.03x = 103,051.12 × 21,317.91
  4. Step 4: Simplify right side
    68,704.03x = 2,196,834,501.56
  5. Step 5: Solve for x
    x = 2,196,834,501.56/68,704.03
  6. Step 6: Final answer
    x = 31,975.34

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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.