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Finding the Fourth Proportional to 71,356.62, 107,041.99 and 26,389.78

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Solution

The fourth proportional to 71,356.62, 107,041.99 and 26,389.78 is: 39,587.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,356.62 : 107,041.99 = 26,389.78 : x
  2. Step 2: Convert to fraction form
    71,356.62/107,041.99 = 26,389.78/x
  3. Step 3: Cross multiply
    71,356.62x = 107,041.99 × 26,389.78
  4. Step 4: Simplify right side
    71,356.62x = 2,824,814,566.86
  5. Step 5: Solve for x
    x = 2,824,814,566.86/71,356.62
  6. Step 6: Final answer
    x = 39,587.28

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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.