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Finding the Fourth Proportional to 89,154, 123,033.60 and 51,436.08

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Solution

The fourth proportional to 89,154, 123,033.60 and 51,436.08 is: 70,982.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,154 : 123,033.60 = 51,436.08 : x
  2. Step 2: Convert to fraction form
    89,154/123,033.60 = 51,436.08/x
  3. Step 3: Cross multiply
    89,154x = 123,033.60 × 51,436.08
  4. Step 4: Simplify right side
    89,154x = 6,328,366,092.29
  5. Step 5: Solve for x
    x = 6,328,366,092.29/89,154
  6. Step 6: Final answer
    x = 70,982.41

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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.