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Finding the Fourth Proportional to 43,407, 65,118.96 and 18,446.76

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Solution

The fourth proportional to 43,407, 65,118.96 and 18,446.76 is: 27,673.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,407 : 65,118.96 = 18,446.76 : x
  2. Step 2: Convert to fraction form
    43,407/65,118.96 = 18,446.76/x
  3. Step 3: Cross multiply
    43,407x = 65,118.96 × 18,446.76
  4. Step 4: Simplify right side
    43,407x = 1,201,233,826.57
  5. Step 5: Solve for x
    x = 1,201,233,826.57/43,407
  6. Step 6: Final answer
    x = 27,673.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.