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Finding the Fourth Proportional to 53,886.50, 80,829.89 and 18,826.15

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Solution

The fourth proportional to 53,886.50, 80,829.89 and 18,826.15 is: 28,239.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,886.50 : 80,829.89 = 18,826.15 : x
  2. Step 2: Convert to fraction form
    53,886.50/80,829.89 = 18,826.15/x
  3. Step 3: Cross multiply
    53,886.50x = 80,829.89 × 18,826.15
  4. Step 4: Simplify right side
    53,886.50x = 1,521,715,633.62
  5. Step 5: Solve for x
    x = 1,521,715,633.62/53,886.50
  6. Step 6: Final answer
    x = 28,239.27

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1.5x scale

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.