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Finding the Fourth Proportional to 73,010.54, 109,522.02 and 20,420.06

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Solution

The fourth proportional to 73,010.54, 109,522.02 and 20,420.06 is: 30,631.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,010.54 : 109,522.02 = 20,420.06 : x
  2. Step 2: Convert to fraction form
    73,010.54/109,522.02 = 20,420.06/x
  3. Step 3: Cross multiply
    73,010.54x = 109,522.02 × 20,420.06
  4. Step 4: Simplify right side
    73,010.54x = 2,236,446,219.72
  5. Step 5: Solve for x
    x = 2,236,446,219.72/73,010.54
  6. Step 6: Final answer
    x = 30,631.83

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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.