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Finding the Fourth Proportional to 85,297.87, 117,673 and 49,467.12

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Solution

The fourth proportional to 85,297.87, 117,673 and 49,467.12 is: 68,242.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,297.87 : 117,673 = 49,467.12 : x
  2. Step 2: Convert to fraction form
    85,297.87/117,673 = 49,467.12/x
  3. Step 3: Cross multiply
    85,297.87x = 117,673 × 49,467.12
  4. Step 4: Simplify right side
    85,297.87x = 5,820,944,411.76
  5. Step 5: Solve for x
    x = 5,820,944,411.76/85,297.87
  6. Step 6: Final answer
    x = 68,242.56

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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.