Home / 89,899.56-134,876.07-39,972.78

Finding the Fourth Proportional to 89,899.56, 134,876.07 and 39,972.78

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Solution

The fourth proportional to 89,899.56, 134,876.07 and 39,972.78 is: 59,971.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,899.56 : 134,876.07 = 39,972.78 : x
  2. Step 2: Convert to fraction form
    89,899.56/134,876.07 = 39,972.78/x
  3. Step 3: Cross multiply
    89,899.56x = 134,876.07 × 39,972.78
  4. Step 4: Simplify right side
    89,899.56x = 5,391,371,473.37
  5. Step 5: Solve for x
    x = 5,391,371,473.37/89,899.56
  6. Step 6: Final answer
    x = 59,971.06

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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.