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Finding the Fourth Proportional to 73,790.55, 110,673.95 and 21,188.07

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Solution

The fourth proportional to 73,790.55, 110,673.95 and 21,188.07 is: 31,778.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,790.55 : 110,673.95 = 21,188.07 : x
  2. Step 2: Convert to fraction form
    73,790.55/110,673.95 = 21,188.07/x
  3. Step 3: Cross multiply
    73,790.55x = 110,673.95 × 21,188.07
  4. Step 4: Simplify right side
    73,790.55x = 2,344,967,293.84
  5. Step 5: Solve for x
    x = 2,344,967,293.84/73,790.55
  6. Step 6: Final answer
    x = 31,778.69

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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.