Home / 89,712.44-123,812.84-49,430.28

Finding the Fourth Proportional to 89,712.44, 123,812.84 and 49,430.28

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Solution

The fourth proportional to 89,712.44, 123,812.84 and 49,430.28 is: 68,219.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,712.44 : 123,812.84 = 49,430.28 : x
  2. Step 2: Convert to fraction form
    89,712.44/123,812.84 = 49,430.28/x
  3. Step 3: Cross multiply
    89,712.44x = 123,812.84 × 49,430.28
  4. Step 4: Simplify right side
    89,712.44x = 6,120,103,348.80
  5. Step 5: Solve for x
    x = 6,120,103,348.80/89,712.44
  6. Step 6: Final answer
    x = 68,219.12

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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.