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Finding the Fourth Proportional to 73,209.42, 109,817.98 and 20,623.01

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Solution

The fourth proportional to 73,209.42, 109,817.98 and 20,623.01 is: 30,935.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,209.42 : 109,817.98 = 20,623.01 : x
  2. Step 2: Convert to fraction form
    73,209.42/109,817.98 = 20,623.01/x
  3. Step 3: Cross multiply
    73,209.42x = 109,817.98 × 20,623.01
  4. Step 4: Simplify right side
    73,209.42x = 2,264,776,699.07
  5. Step 5: Solve for x
    x = 2,264,776,699.07/73,209.42
  6. Step 6: Final answer
    x = 30,935.59

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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.