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Finding the Fourth Proportional to 74,270.71, 102,391.05 and 71,944.39

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Solution

The fourth proportional to 74,270.71, 102,391.05 and 71,944.39 is: 99,183.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,270.71 : 102,391.05 = 71,944.39 : x
  2. Step 2: Convert to fraction form
    74,270.71/102,391.05 = 71,944.39/x
  3. Step 3: Cross multiply
    74,270.71x = 102,391.05 × 71,944.39
  4. Step 4: Simplify right side
    74,270.71x = 7,366,461,633.71
  5. Step 5: Solve for x
    x = 7,366,461,633.71/74,270.71
  6. Step 6: Final answer
    x = 99,183.94

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1.5x scale

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.