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Finding the Fourth Proportional to 81,404.99, 112,393.74 and 50,824.69

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Solution

The fourth proportional to 81,404.99, 112,393.74 and 50,824.69 is: 70,172.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,404.99 : 112,393.74 = 50,824.69 : x
  2. Step 2: Convert to fraction form
    81,404.99/112,393.74 = 50,824.69/x
  3. Step 3: Cross multiply
    81,404.99x = 112,393.74 × 50,824.69
  4. Step 4: Simplify right side
    81,404.99x = 5,712,376,993.44
  5. Step 5: Solve for x
    x = 5,712,376,993.44/81,404.99
  6. Step 6: Final answer
    x = 70,172.32

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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.