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Finding the Fourth Proportional to 89,294.40, 133,747.20 and 54,172.80

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Solution

The fourth proportional to 89,294.40, 133,747.20 and 54,172.80 is: 81,141.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,294.40 : 133,747.20 = 54,172.80 : x
  2. Step 2: Convert to fraction form
    89,294.40/133,747.20 = 54,172.80/x
  3. Step 3: Cross multiply
    89,294.40x = 133,747.20 × 54,172.80
  4. Step 4: Simplify right side
    89,294.40x = 7,245,460,316.16
  5. Step 5: Solve for x
    x = 7,245,460,316.16/89,294.40
  6. Step 6: Final answer
    x = 81,141.26

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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.