Home / 66,521.44-99,640.29-53,816.68

Finding the Fourth Proportional to 66,521.44, 99,640.29 and 53,816.68

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Solution

The fourth proportional to 66,521.44, 99,640.29 and 53,816.68 is: 80,610.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,521.44 : 99,640.29 = 53,816.68 : x
  2. Step 2: Convert to fraction form
    66,521.44/99,640.29 = 53,816.68/x
  3. Step 3: Cross multiply
    66,521.44x = 99,640.29 × 53,816.68
  4. Step 4: Simplify right side
    66,521.44x = 5,362,309,928.40
  5. Step 5: Solve for x
    x = 5,362,309,928.40/66,521.44
  6. Step 6: Final answer
    x = 80,610.25

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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.