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Finding the Fourth Proportional to 65,512.71, 90,381.29 and 41,305.71

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Solution

The fourth proportional to 65,512.71, 90,381.29 and 41,305.71 is: 56,985.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,512.71 : 90,381.29 = 41,305.71 : x
  2. Step 2: Convert to fraction form
    65,512.71/90,381.29 = 41,305.71/x
  3. Step 3: Cross multiply
    65,512.71x = 90,381.29 × 41,305.71
  4. Step 4: Simplify right side
    65,512.71x = 3,733,263,147.64
  5. Step 5: Solve for x
    x = 3,733,263,147.64/65,512.71
  6. Step 6: Final answer
    x = 56,985.33

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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.