Home / 66,179.35-99,270.04-21,209.16

Finding the Fourth Proportional to 66,179.35, 99,270.04 and 21,209.16

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Solution

The fourth proportional to 66,179.35, 99,270.04 and 21,209.16 is: 31,814.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,179.35 : 99,270.04 = 21,209.16 : x
  2. Step 2: Convert to fraction form
    66,179.35/99,270.04 = 21,209.16/x
  3. Step 3: Cross multiply
    66,179.35x = 99,270.04 × 21,209.16
  4. Step 4: Simplify right side
    66,179.35x = 2,105,433,962.18
  5. Step 5: Solve for x
    x = 2,105,433,962.18/66,179.35
  6. Step 6: Final answer
    x = 31,814.06

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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.