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Finding the Fourth Proportional to 71,393.16, 107,103.26 and 28,701.89

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Solution

The fourth proportional to 71,393.16, 107,103.26 and 28,701.89 is: 43,058.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,393.16 : 107,103.26 = 28,701.89 : x
  2. Step 2: Convert to fraction form
    71,393.16/107,103.26 = 28,701.89/x
  3. Step 3: Cross multiply
    71,393.16x = 107,103.26 × 28,701.89
  4. Step 4: Simplify right side
    71,393.16x = 3,074,065,987.16
  5. Step 5: Solve for x
    x = 3,074,065,987.16/71,393.16
  6. Step 6: Final answer
    x = 43,058.27

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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.