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Finding the Fourth Proportional to 53,859.74, 80,779.88 and 18,809.42

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Solution

The fourth proportional to 53,859.74, 80,779.88 and 18,809.42 is: 28,210.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,859.74 : 80,779.88 = 18,809.42 : x
  2. Step 2: Convert to fraction form
    53,859.74/80,779.88 = 18,809.42/x
  3. Step 3: Cross multiply
    53,859.74x = 80,779.88 × 18,809.42
  4. Step 4: Simplify right side
    53,859.74x = 1,519,422,333.59
  5. Step 5: Solve for x
    x = 1,519,422,333.59/53,859.74
  6. Step 6: Final answer
    x = 28,210.73

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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.