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Finding the Fourth Proportional to 36,117.80, 54,219.90 and 20,335.40

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Solution

The fourth proportional to 36,117.80, 54,219.90 and 20,335.40 is: 30,527.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,117.80 : 54,219.90 = 20,335.40 : x
  2. Step 2: Convert to fraction form
    36,117.80/54,219.90 = 20,335.40/x
  3. Step 3: Cross multiply
    36,117.80x = 54,219.90 × 20,335.40
  4. Step 4: Simplify right side
    36,117.80x = 1,102,583,354.46
  5. Step 5: Solve for x
    x = 1,102,583,354.46/36,117.80
  6. Step 6: Final answer
    x = 30,527.42

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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.