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Finding the Fourth Proportional to 53,579.63, 80,372.78 and 14,136.78

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Solution

The fourth proportional to 53,579.63, 80,372.78 and 14,136.78 is: 21,206.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,579.63 : 80,372.78 = 14,136.78 : x
  2. Step 2: Convert to fraction form
    53,579.63/80,372.78 = 14,136.78/x
  3. Step 3: Cross multiply
    53,579.63x = 80,372.78 × 14,136.78
  4. Step 4: Simplify right side
    53,579.63x = 1,136,212,238.16
  5. Step 5: Solve for x
    x = 1,136,212,238.16/53,579.63
  6. Step 6: Final answer
    x = 21,206.05

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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.