Home / 89,428.40-123,409.68-49,142.12

Finding the Fourth Proportional to 89,428.40, 123,409.68 and 49,142.12

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Solution

The fourth proportional to 89,428.40, 123,409.68 and 49,142.12 is: 67,815.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,428.40 : 123,409.68 = 49,142.12 : x
  2. Step 2: Convert to fraction form
    89,428.40/123,409.68 = 49,142.12/x
  3. Step 3: Cross multiply
    89,428.40x = 123,409.68 × 49,142.12
  4. Step 4: Simplify right side
    89,428.40x = 6,064,612,849.48
  5. Step 5: Solve for x
    x = 6,064,612,849.48/89,428.40
  6. Step 6: Final answer
    x = 67,815.29

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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.