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Finding the Fourth Proportional to 65,863.92, 90,891.36 and 37,570.08

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Solution

The fourth proportional to 65,863.92, 90,891.36 and 37,570.08 is: 51,846.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,863.92 : 90,891.36 = 37,570.08 : x
  2. Step 2: Convert to fraction form
    65,863.92/90,891.36 = 37,570.08/x
  3. Step 3: Cross multiply
    65,863.92x = 90,891.36 × 37,570.08
  4. Step 4: Simplify right side
    65,863.92x = 3,414,795,666.51
  5. Step 5: Solve for x
    x = 3,414,795,666.51/65,863.92
  6. Step 6: Final answer
    x = 51,846.23

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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.