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Finding the Fourth Proportional to 71,369.88, 107,058.28 and 39,756.20

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Solution

The fourth proportional to 71,369.88, 107,058.28 and 39,756.20 is: 59,636.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,369.88 : 107,058.28 = 39,756.20 : x
  2. Step 2: Convert to fraction form
    71,369.88/107,058.28 = 39,756.20/x
  3. Step 3: Cross multiply
    71,369.88x = 107,058.28 × 39,756.20
  4. Step 4: Simplify right side
    71,369.88x = 4,256,230,391.34
  5. Step 5: Solve for x
    x = 4,256,230,391.34/71,369.88
  6. Step 6: Final answer
    x = 59,636.23

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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.