Home / 89,695.35-123,780.42-49,409.28

Finding the Fourth Proportional to 89,695.35, 123,780.42 and 49,409.28

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Solution

The fourth proportional to 89,695.35, 123,780.42 and 49,409.28 is: 68,185.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,695.35 : 123,780.42 = 49,409.28 : x
  2. Step 2: Convert to fraction form
    89,695.35/123,780.42 = 49,409.28/x
  3. Step 3: Cross multiply
    89,695.35x = 123,780.42 × 49,409.28
  4. Step 4: Simplify right side
    89,695.35x = 6,115,901,430.30
  5. Step 5: Solve for x
    x = 6,115,901,430.30/89,695.35
  6. Step 6: Final answer
    x = 68,185.27

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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.