Home / 72,938.62-109,426.38-20,348.08

Finding the Fourth Proportional to 72,938.62, 109,426.38 and 20,348.08

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Solution

The fourth proportional to 72,938.62, 109,426.38 and 20,348.08 is: 30,527.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,938.62 : 109,426.38 = 20,348.08 : x
  2. Step 2: Convert to fraction form
    72,938.62/109,426.38 = 20,348.08/x
  3. Step 3: Cross multiply
    72,938.62x = 109,426.38 × 20,348.08
  4. Step 4: Simplify right side
    72,938.62x = 2,226,616,734.35
  5. Step 5: Solve for x
    x = 2,226,616,734.35/72,938.62
  6. Step 6: Final answer
    x = 30,527.27

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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.