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Finding the Fourth Proportional to 89,806.05, 123,927.90 and 51,038.82

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Solution

The fourth proportional to 89,806.05, 123,927.90 and 51,038.82 is: 70,431.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,806.05 : 123,927.90 = 51,038.82 : x
  2. Step 2: Convert to fraction form
    89,806.05/123,927.90 = 51,038.82/x
  3. Step 3: Cross multiply
    89,806.05x = 123,927.90 × 51,038.82
  4. Step 4: Simplify right side
    89,806.05x = 6,325,133,781.08
  5. Step 5: Solve for x
    x = 6,325,133,781.08/89,806.05
  6. Step 6: Final answer
    x = 70,431.04

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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.