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Finding the Fourth Proportional to 68,570.92, 94,589.78 and 39,887.34

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Solution

The fourth proportional to 68,570.92, 94,589.78 and 39,887.34 is: 55,022.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,570.92 : 94,589.78 = 39,887.34 : x
  2. Step 2: Convert to fraction form
    68,570.92/94,589.78 = 39,887.34/x
  3. Step 3: Cross multiply
    68,570.92x = 94,589.78 × 39,887.34
  4. Step 4: Simplify right side
    68,570.92x = 3,772,934,715.39
  5. Step 5: Solve for x
    x = 3,772,934,715.39/68,570.92
  6. Step 6: Final answer
    x = 55,022.37

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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.