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Finding the Fourth Proportional to 74,253.65, 102,432.62 and 53,045.21

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Solution

The fourth proportional to 74,253.65, 102,432.62 and 53,045.21 is: 73,175.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,253.65 : 102,432.62 = 53,045.21 : x
  2. Step 2: Convert to fraction form
    74,253.65/102,432.62 = 53,045.21/x
  3. Step 3: Cross multiply
    74,253.65x = 102,432.62 × 53,045.21
  4. Step 4: Simplify right side
    74,253.65x = 5,433,560,227.44
  5. Step 5: Solve for x
    x = 5,433,560,227.44/74,253.65
  6. Step 6: Final answer
    x = 73,175.67

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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.