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Finding the Fourth Proportional to 51,072, 70,429.02 and 48,119.52

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Solution

The fourth proportional to 51,072, 70,429.02 and 48,119.52 is: 66,357.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,072 : 70,429.02 = 48,119.52 : x
  2. Step 2: Convert to fraction form
    51,072/70,429.02 = 48,119.52/x
  3. Step 3: Cross multiply
    51,072x = 70,429.02 × 48,119.52
  4. Step 4: Simplify right side
    51,072x = 3,389,010,636.47
  5. Step 5: Solve for x
    x = 3,389,010,636.47/51,072
  6. Step 6: Final answer
    x = 66,357.51

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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.