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Finding the Fourth Proportional to 43,690, 65,518.36 and 15,604.80

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Solution

The fourth proportional to 43,690, 65,518.36 and 15,604.80 is: 23,401.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,690 : 65,518.36 = 15,604.80 : x
  2. Step 2: Convert to fraction form
    43,690/65,518.36 = 15,604.80/x
  3. Step 3: Cross multiply
    43,690x = 65,518.36 × 15,604.80
  4. Step 4: Simplify right side
    43,690x = 1,022,400,904.13
  5. Step 5: Solve for x
    x = 1,022,400,904.13/43,690
  6. Step 6: Final answer
    x = 23,401.26

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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.