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Finding the Fourth Proportional to 74,357.67, 111,537.23 and 18,953.67

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Solution

The fourth proportional to 74,357.67, 111,537.23 and 18,953.67 is: 28,430.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,357.67 : 111,537.23 = 18,953.67 : x
  2. Step 2: Convert to fraction form
    74,357.67/111,537.23 = 18,953.67/x
  3. Step 3: Cross multiply
    74,357.67x = 111,537.23 × 18,953.67
  4. Step 4: Simplify right side
    74,357.67x = 2,114,039,850.13
  5. Step 5: Solve for x
    x = 2,114,039,850.13/74,357.67
  6. Step 6: Final answer
    x = 28,430.69

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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.