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Finding the Fourth Proportional to 87,645.60, 131,554.80 and 43,322.40

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Solution

The fourth proportional to 87,645.60, 131,554.80 and 43,322.40 is: 65,026.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,645.60 : 131,554.80 = 43,322.40 : x
  2. Step 2: Convert to fraction form
    87,645.60/131,554.80 = 43,322.40/x
  3. Step 3: Cross multiply
    87,645.60x = 131,554.80 × 43,322.40
  4. Step 4: Simplify right side
    87,645.60x = 5,699,269,667.52
  5. Step 5: Solve for x
    x = 5,699,269,667.52/87,645.60
  6. Step 6: Final answer
    x = 65,026.31

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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.