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Finding the Fourth Proportional to 53,966.80, 80,950.20 and 18,901.90

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Solution

The fourth proportional to 53,966.80, 80,950.20 and 18,901.90 is: 28,352.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,966.80 : 80,950.20 = 18,901.90 : x
  2. Step 2: Convert to fraction form
    53,966.80/80,950.20 = 18,901.90/x
  3. Step 3: Cross multiply
    53,966.80x = 80,950.20 × 18,901.90
  4. Step 4: Simplify right side
    53,966.80x = 1,530,112,585.38
  5. Step 5: Solve for x
    x = 1,530,112,585.38/53,966.80
  6. Step 6: Final answer
    x = 28,352.85

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Similar ratio
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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.