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Finding the Fourth Proportional to 68,338.68, 94,300.20 and 40,039.08

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Solution

The fourth proportional to 68,338.68, 94,300.20 and 40,039.08 is: 55,249.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,338.68 : 94,300.20 = 40,039.08 : x
  2. Step 2: Convert to fraction form
    68,338.68/94,300.20 = 40,039.08/x
  3. Step 3: Cross multiply
    68,338.68x = 94,300.20 × 40,039.08
  4. Step 4: Simplify right side
    68,338.68x = 3,775,693,251.82
  5. Step 5: Solve for x
    x = 3,775,693,251.82/68,338.68
  6. Step 6: Final answer
    x = 55,249.72

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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.