Home / 89,278.40-123,205.48-48,991.44

Finding the Fourth Proportional to 89,278.40, 123,205.48 and 48,991.44

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Solution

The fourth proportional to 89,278.40, 123,205.48 and 48,991.44 is: 67,608.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,278.40 : 123,205.48 = 48,991.44 : x
  2. Step 2: Convert to fraction form
    89,278.40/123,205.48 = 48,991.44/x
  3. Step 3: Cross multiply
    89,278.40x = 123,205.48 × 48,991.44
  4. Step 4: Simplify right side
    89,278.40x = 6,036,013,881.09
  5. Step 5: Solve for x
    x = 6,036,013,881.09/89,278.40
  6. Step 6: Final answer
    x = 67,608.89

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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.