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Finding the Fourth Proportional to 53,854.88, 80,776.52 and 18,795.20

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Solution

The fourth proportional to 53,854.88, 80,776.52 and 18,795.20 is: 28,190.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,854.88 : 80,776.52 = 18,795.20 : x
  2. Step 2: Convert to fraction form
    53,854.88/80,776.52 = 18,795.20/x
  3. Step 3: Cross multiply
    53,854.88x = 80,776.52 × 18,795.20
  4. Step 4: Simplify right side
    53,854.88x = 1,518,210,848.70
  5. Step 5: Solve for x
    x = 1,518,210,848.70/53,854.88
  6. Step 6: Final answer
    x = 28,190.78

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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.