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Finding the Fourth Proportional to 65,863.59, 90,891.12 and 35,648.25

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Solution

The fourth proportional to 65,863.59, 90,891.12 and 35,648.25 is: 49,194.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,863.59 : 90,891.12 = 35,648.25 : x
  2. Step 2: Convert to fraction form
    65,863.59/90,891.12 = 35,648.25/x
  3. Step 3: Cross multiply
    65,863.59x = 90,891.12 × 35,648.25
  4. Step 4: Simplify right side
    65,863.59x = 3,240,109,368.54
  5. Step 5: Solve for x
    x = 3,240,109,368.54/65,863.59
  6. Step 6: Final answer
    x = 49,194.24

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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.