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Finding the Fourth Proportional to 43,409.28, 65,115.28 and 14,945.93

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Solution

The fourth proportional to 43,409.28, 65,115.28 and 14,945.93 is: 22,419.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,409.28 : 65,115.28 = 14,945.93 : x
  2. Step 2: Convert to fraction form
    43,409.28/65,115.28 = 14,945.93/x
  3. Step 3: Cross multiply
    43,409.28x = 65,115.28 × 14,945.93
  4. Step 4: Simplify right side
    43,409.28x = 973,208,091.23
  5. Step 5: Solve for x
    x = 973,208,091.23/43,409.28
  6. Step 6: Final answer
    x = 22,419.36

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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.