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Finding the Fourth Proportional to 66,504,420.40, 99,756,630.60 and 64,513,764.40

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Solution

The fourth proportional to 66,504,420.40, 99,756,630.60 and 64,513,764.40 is: 96,770,646.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,504,420.40 : 99,756,630.60 = 64,513,764.40 : x
  2. Step 2: Convert to fraction form
    66,504,420.40/99,756,630.60 = 64,513,764.40/x
  3. Step 3: Cross multiply
    66,504,420.40x = 99,756,630.60 × 64,513,764.40
  4. Step 4: Simplify right side
    66,504,420.40x = 6,435,675,763,866,230
  5. Step 5: Solve for x
    x = 6,435,675,763,866,230/66,504,420.40
  6. Step 6: Final answer
    x = 96,770,646.60

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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.