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Finding the Fourth Proportional to 45,042, 62,172.54 and 28,275

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Solution

The fourth proportional to 45,042, 62,172.54 and 28,275 is: 39,028.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,042 : 62,172.54 = 28,275 : x
  2. Step 2: Convert to fraction form
    45,042/62,172.54 = 28,275/x
  3. Step 3: Cross multiply
    45,042x = 62,172.54 × 28,275
  4. Step 4: Simplify right side
    45,042x = 1,757,928,568.50
  5. Step 5: Solve for x
    x = 1,757,928,568.50/45,042
  6. Step 6: Final answer
    x = 39,028.65

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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.