Home / 65,828.20-98,815.20-40,896.40

Finding the Fourth Proportional to 65,828.20, 98,815.20 and 40,896.40

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Solution

The fourth proportional to 65,828.20, 98,815.20 and 40,896.40 is: 61,389.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,828.20 : 98,815.20 = 40,896.40 : x
  2. Step 2: Convert to fraction form
    65,828.20/98,815.20 = 40,896.40/x
  3. Step 3: Cross multiply
    65,828.20x = 98,815.20 × 40,896.40
  4. Step 4: Simplify right side
    65,828.20x = 4,041,185,945.28
  5. Step 5: Solve for x
    x = 4,041,185,945.28/65,828.20
  6. Step 6: Final answer
    x = 61,389.89

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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.