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Finding the Fourth Proportional to 53,898.88, 80,871.84 and 18,863.68

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Solution

The fourth proportional to 53,898.88, 80,871.84 and 18,863.68 is: 28,303.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,898.88 : 80,871.84 = 18,863.68 : x
  2. Step 2: Convert to fraction form
    53,898.88/80,871.84 = 18,863.68/x
  3. Step 3: Cross multiply
    53,898.88x = 80,871.84 × 18,863.68
  4. Step 4: Simplify right side
    53,898.88x = 1,525,540,510.77
  5. Step 5: Solve for x
    x = 1,525,540,510.77/53,898.88
  6. Step 6: Final answer
    x = 28,303.75

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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.