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Finding the Fourth Proportional to 67,537.68, 101,317.68 and 20,790.72

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Solution

The fourth proportional to 67,537.68, 101,317.68 and 20,790.72 is: 31,189.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,537.68 : 101,317.68 = 20,790.72 : x
  2. Step 2: Convert to fraction form
    67,537.68/101,317.68 = 20,790.72/x
  3. Step 3: Cross multiply
    67,537.68x = 101,317.68 × 20,790.72
  4. Step 4: Simplify right side
    67,537.68x = 2,106,467,515.93
  5. Step 5: Solve for x
    x = 2,106,467,515.93/67,537.68
  6. Step 6: Final answer
    x = 31,189.52

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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.