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Finding the Fourth Proportional to 71,813.96, 99,101.58 and 39,982.24

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Solution

The fourth proportional to 71,813.96, 99,101.58 and 39,982.24 is: 55,174.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,813.96 : 99,101.58 = 39,982.24 : x
  2. Step 2: Convert to fraction form
    71,813.96/99,101.58 = 39,982.24/x
  3. Step 3: Cross multiply
    71,813.96x = 99,101.58 × 39,982.24
  4. Step 4: Simplify right side
    71,813.96x = 3,962,303,155.94
  5. Step 5: Solve for x
    x = 3,962,303,155.94/71,813.96
  6. Step 6: Final answer
    x = 55,174.55

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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.