Home / 66,452,825.60-99,669,907.20-21,019,212.80

Finding the Fourth Proportional to 66,452,825.60, 99,669,907.20 and 21,019,212.80

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Solution

The fourth proportional to 66,452,825.60, 99,669,907.20 and 21,019,212.80 is: 31,525,867.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,452,825.60 : 99,669,907.20 = 21,019,212.80 : x
  2. Step 2: Convert to fraction form
    66,452,825.60/99,669,907.20 = 21,019,212.80/x
  3. Step 3: Cross multiply
    66,452,825.60x = 99,669,907.20 × 21,019,212.80
  4. Step 4: Simplify right side
    66,452,825.60x = 2,094,982,989,193,052.25
  5. Step 5: Solve for x
    x = 2,094,982,989,193,052.25/66,452,825.60
  6. Step 6: Final answer
    x = 31,525,867.72

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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.