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Finding the Fourth Proportional to 71,800.37, 99,086.24 and 39,971.42

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Solution

The fourth proportional to 71,800.37, 99,086.24 and 39,971.42 is: 55,161.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,800.37 : 99,086.24 = 39,971.42 : x
  2. Step 2: Convert to fraction form
    71,800.37/99,086.24 = 39,971.42/x
  3. Step 3: Cross multiply
    71,800.37x = 99,086.24 × 39,971.42
  4. Step 4: Simplify right side
    71,800.37x = 3,960,617,319.76
  5. Step 5: Solve for x
    x = 3,960,617,319.76/71,800.37
  6. Step 6: Final answer
    x = 55,161.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.