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Finding the Fourth Proportional to 65,863.04, 90,891.72 and 37,570.40

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Solution

The fourth proportional to 65,863.04, 90,891.72 and 37,570.40 is: 51,847.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,863.04 : 90,891.72 = 37,570.40 : x
  2. Step 2: Convert to fraction form
    65,863.04/90,891.72 = 37,570.40/x
  3. Step 3: Cross multiply
    65,863.04x = 90,891.72 × 37,570.40
  4. Step 4: Simplify right side
    65,863.04x = 3,414,838,277.09
  5. Step 5: Solve for x
    x = 3,414,838,277.09/65,863.04
  6. Step 6: Final answer
    x = 51,847.57

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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.