Home / 66,290,622.40-99,435,933.60-20,866,340.80

Finding the Fourth Proportional to 66,290,622.40, 99,435,933.60 and 20,866,340.80

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Solution

The fourth proportional to 66,290,622.40, 99,435,933.60 and 20,866,340.80 is: 31,299,511.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,290,622.40 : 99,435,933.60 = 20,866,340.80 : x
  2. Step 2: Convert to fraction form
    66,290,622.40/99,435,933.60 = 20,866,340.80/x
  3. Step 3: Cross multiply
    66,290,622.40x = 99,435,933.60 × 20,866,340.80
  4. Step 4: Simplify right side
    66,290,622.40x = 2,074,864,078,263,770.75
  5. Step 5: Solve for x
    x = 2,074,864,078,263,770.75/66,290,622.40
  6. Step 6: Final answer
    x = 31,299,511.20

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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.