Home / 66,469.48-99,718.62-19,721

Finding the Fourth Proportional to 66,469.48, 99,718.62 and 19,721

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Solution

The fourth proportional to 66,469.48, 99,718.62 and 19,721 is: 29,585.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,469.48 : 99,718.62 = 19,721 : x
  2. Step 2: Convert to fraction form
    66,469.48/99,718.62 = 19,721/x
  3. Step 3: Cross multiply
    66,469.48x = 99,718.62 × 19,721
  4. Step 4: Simplify right side
    66,469.48x = 1,966,550,905.02
  5. Step 5: Solve for x
    x = 1,966,550,905.02/66,469.48
  6. Step 6: Final answer
    x = 29,585.77

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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.