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Finding the Fourth Proportional to 53,490.20, 80,235.30 and 14,051.30

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Solution

The fourth proportional to 53,490.20, 80,235.30 and 14,051.30 is: 21,076.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,490.20 : 80,235.30 = 14,051.30 : x
  2. Step 2: Convert to fraction form
    53,490.20/80,235.30 = 14,051.30/x
  3. Step 3: Cross multiply
    53,490.20x = 80,235.30 × 14,051.30
  4. Step 4: Simplify right side
    53,490.20x = 1,127,410,270.89
  5. Step 5: Solve for x
    x = 1,127,410,270.89/53,490.20
  6. Step 6: Final answer
    x = 21,076.95

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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.