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Finding the Fourth Proportional to 89,800.52, 134,721.90 and 30,636.40

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Solution

The fourth proportional to 89,800.52, 134,721.90 and 30,636.40 is: 45,961.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,800.52 : 134,721.90 = 30,636.40 : x
  2. Step 2: Convert to fraction form
    89,800.52/134,721.90 = 30,636.40/x
  3. Step 3: Cross multiply
    89,800.52x = 134,721.90 × 30,636.40
  4. Step 4: Simplify right side
    89,800.52x = 4,127,394,017.16
  5. Step 5: Solve for x
    x = 4,127,394,017.16/89,800.52
  6. Step 6: Final answer
    x = 45,961.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.