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Finding the Fourth Proportional to 66,430,206.40, 99,645,309.60 and 55,907,674.60

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Solution

The fourth proportional to 66,430,206.40, 99,645,309.60 and 55,907,674.60 is: 83,861,511.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,430,206.40 : 99,645,309.60 = 55,907,674.60 : x
  2. Step 2: Convert to fraction form
    66,430,206.40/99,645,309.60 = 55,907,674.60/x
  3. Step 3: Cross multiply
    66,430,206.40x = 99,645,309.60 × 55,907,674.60
  4. Step 4: Simplify right side
    66,430,206.40x = 5,570,937,544,533,056
  5. Step 5: Solve for x
    x = 5,570,937,544,533,056/66,430,206.40
  6. Step 6: Final answer
    x = 83,861,511.90

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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.