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Finding the Fourth Proportional to 53,956.10, 80,929.02 and 18,893.90

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Solution

The fourth proportional to 53,956.10, 80,929.02 and 18,893.90 is: 28,339.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,956.10 : 80,929.02 = 18,893.90 : x
  2. Step 2: Convert to fraction form
    53,956.10/80,929.02 = 18,893.90/x
  3. Step 3: Cross multiply
    53,956.10x = 80,929.02 × 18,893.90
  4. Step 4: Simplify right side
    53,956.10x = 1,529,064,810.98
  5. Step 5: Solve for x
    x = 1,529,064,810.98/53,956.10
  6. Step 6: Final answer
    x = 28,339.05

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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.