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Finding the Fourth Proportional to 43,616.48, 65,415 and 20,230.16

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Solution

The fourth proportional to 43,616.48, 65,415 and 20,230.16 is: 30,340.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,616.48 : 65,415 = 20,230.16 : x
  2. Step 2: Convert to fraction form
    43,616.48/65,415 = 20,230.16/x
  3. Step 3: Cross multiply
    43,616.48x = 65,415 × 20,230.16
  4. Step 4: Simplify right side
    43,616.48x = 1,323,355,916.40
  5. Step 5: Solve for x
    x = 1,323,355,916.40/43,616.48
  6. Step 6: Final answer
    x = 30,340.73

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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.