Home / 66,257,047.80-99,388,941.30-20,819,287.80

Finding the Fourth Proportional to 66,257,047.80, 99,388,941.30 and 20,819,287.80

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Solution

The fourth proportional to 66,257,047.80, 99,388,941.30 and 20,819,287.80 is: 31,229,990.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,257,047.80 : 99,388,941.30 = 20,819,287.80 : x
  2. Step 2: Convert to fraction form
    66,257,047.80/99,388,941.30 = 20,819,287.80/x
  3. Step 3: Cross multiply
    66,257,047.80x = 99,388,941.30 × 20,819,287.80
  4. Step 4: Simplify right side
    66,257,047.80x = 2,069,206,973,062,006.25
  5. Step 5: Solve for x
    x = 2,069,206,973,062,006.25/66,257,047.80
  6. Step 6: Final answer
    x = 31,229,990.50

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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.