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Finding the Fourth Proportional to 96,489, 133,154.82 and 54,047.43

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Solution

The fourth proportional to 96,489, 133,154.82 and 54,047.43 is: 74,585.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,489 : 133,154.82 = 54,047.43 : x
  2. Step 2: Convert to fraction form
    96,489/133,154.82 = 54,047.43/x
  3. Step 3: Cross multiply
    96,489x = 133,154.82 × 54,047.43
  4. Step 4: Simplify right side
    96,489x = 7,196,675,813.11
  5. Step 5: Solve for x
    x = 7,196,675,813.11/96,489
  6. Step 6: Final answer
    x = 74,585.45

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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.