Home / 66,256,999.80-99,388,869.30-20,819,239.80

Finding the Fourth Proportional to 66,256,999.80, 99,388,869.30 and 20,819,239.80

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Solution

The fourth proportional to 66,256,999.80, 99,388,869.30 and 20,819,239.80 is: 31,229,918.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,256,999.80 : 99,388,869.30 = 20,819,239.80 : x
  2. Step 2: Convert to fraction form
    66,256,999.80/99,388,869.30 = 20,819,239.80/x
  3. Step 3: Cross multiply
    66,256,999.80x = 99,388,869.30 × 20,819,239.80
  4. Step 4: Simplify right side
    66,256,999.80x = 2,069,200,703,407,558.25
  5. Step 5: Solve for x
    x = 2,069,200,703,407,558.25/66,256,999.80
  6. Step 6: Final answer
    x = 31,229,918.49

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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.