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Finding the Fourth Proportional to 70,491.69, 97,278.34 and 40,286.39

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Solution

The fourth proportional to 70,491.69, 97,278.34 and 40,286.39 is: 55,595.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,491.69 : 97,278.34 = 40,286.39 : x
  2. Step 2: Convert to fraction form
    70,491.69/97,278.34 = 40,286.39/x
  3. Step 3: Cross multiply
    70,491.69x = 97,278.34 × 40,286.39
  4. Step 4: Simplify right side
    70,491.69x = 3,918,992,900.60
  5. Step 5: Solve for x
    x = 3,918,992,900.60/70,491.69
  6. Step 6: Final answer
    x = 55,595.10

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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.