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Finding the Fourth Proportional to 73,020.81, 100,769.13 and 40,756.89

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Solution

The fourth proportional to 73,020.81, 100,769.13 and 40,756.89 is: 56,244.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,020.81 : 100,769.13 = 40,756.89 : x
  2. Step 2: Convert to fraction form
    73,020.81/100,769.13 = 40,756.89/x
  3. Step 3: Cross multiply
    73,020.81x = 100,769.13 × 40,756.89
  4. Step 4: Simplify right side
    73,020.81x = 4,107,036,346.81
  5. Step 5: Solve for x
    x = 4,107,036,346.81/73,020.81
  6. Step 6: Final answer
    x = 56,244.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.