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Finding the Fourth Proportional to 71,886.44, 107,829.63 and 19,295.91

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Solution

The fourth proportional to 71,886.44, 107,829.63 and 19,295.91 is: 28,943.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,886.44 : 107,829.63 = 19,295.91 : x
  2. Step 2: Convert to fraction form
    71,886.44/107,829.63 = 19,295.91/x
  3. Step 3: Cross multiply
    71,886.44x = 107,829.63 × 19,295.91
  4. Step 4: Simplify right side
    71,886.44x = 2,080,670,835.81
  5. Step 5: Solve for x
    x = 2,080,670,835.81/71,886.44
  6. Step 6: Final answer
    x = 28,943.86

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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.