Home / 89,885.40-134,828.09-30,721.58

Finding the Fourth Proportional to 89,885.40, 134,828.09 and 30,721.58

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Solution

The fourth proportional to 89,885.40, 134,828.09 and 30,721.58 is: 46,082.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,885.40 : 134,828.09 = 30,721.58 : x
  2. Step 2: Convert to fraction form
    89,885.40/134,828.09 = 30,721.58/x
  3. Step 3: Cross multiply
    89,885.40x = 134,828.09 × 30,721.58
  4. Step 4: Simplify right side
    89,885.40x = 4,142,131,919.05
  5. Step 5: Solve for x
    x = 4,142,131,919.05/89,885.40
  6. Step 6: Final answer
    x = 46,082.37

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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.