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Finding the Fourth Proportional to 53,969.80, 80,954.70 and 18,904.90

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Solution

The fourth proportional to 53,969.80, 80,954.70 and 18,904.90 is: 28,357.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,969.80 : 80,954.70 = 18,904.90 : x
  2. Step 2: Convert to fraction form
    53,969.80/80,954.70 = 18,904.90/x
  3. Step 3: Cross multiply
    53,969.80x = 80,954.70 × 18,904.90
  4. Step 4: Simplify right side
    53,969.80x = 1,530,440,508.03
  5. Step 5: Solve for x
    x = 1,530,440,508.03/53,969.80
  6. Step 6: Final answer
    x = 28,357.35

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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.