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Finding the Fourth Proportional to 89,325.40, 133,793.70 and 54,203.80

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Solution

The fourth proportional to 89,325.40, 133,793.70 and 54,203.80 is: 81,187.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,325.40 : 133,793.70 = 54,203.80 : x
  2. Step 2: Convert to fraction form
    89,325.40/133,793.70 = 54,203.80/x
  3. Step 3: Cross multiply
    89,325.40x = 133,793.70 × 54,203.80
  4. Step 4: Simplify right side
    89,325.40x = 7,252,126,956.06
  5. Step 5: Solve for x
    x = 7,252,126,956.06/89,325.40
  6. Step 6: Final answer
    x = 81,187.74

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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.