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Finding the Fourth Proportional to 43,663.89, 65,503.95 and 14,078.64

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Solution

The fourth proportional to 43,663.89, 65,503.95 and 14,078.64 is: 21,120.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,663.89 : 65,503.95 = 14,078.64 : x
  2. Step 2: Convert to fraction form
    43,663.89/65,503.95 = 14,078.64/x
  3. Step 3: Cross multiply
    43,663.89x = 65,503.95 × 14,078.64
  4. Step 4: Simplify right side
    43,663.89x = 922,206,530.63
  5. Step 5: Solve for x
    x = 922,206,530.63/43,663.89
  6. Step 6: Final answer
    x = 21,120.58

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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.