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Finding the Fourth Proportional to 68,993.97, 95,220.47 and 42,130.82

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Solution

The fourth proportional to 68,993.97, 95,220.47 and 42,130.82 is: 58,145.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,993.97 : 95,220.47 = 42,130.82 : x
  2. Step 2: Convert to fraction form
    68,993.97/95,220.47 = 42,130.82/x
  3. Step 3: Cross multiply
    68,993.97x = 95,220.47 × 42,130.82
  4. Step 4: Simplify right side
    68,993.97x = 4,011,716,481.89
  5. Step 5: Solve for x
    x = 4,011,716,481.89/68,993.97
  6. Step 6: Final answer
    x = 58,145.90

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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.