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Finding the Fourth Proportional to 66,195,999.60, 99,293,999.40 and 51,079,455.60

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Solution

The fourth proportional to 66,195,999.60, 99,293,999.40 and 51,079,455.60 is: 76,619,183.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,195,999.60 : 99,293,999.40 = 51,079,455.60 : x
  2. Step 2: Convert to fraction form
    66,195,999.60/99,293,999.40 = 51,079,455.60/x
  3. Step 3: Cross multiply
    66,195,999.60x = 99,293,999.40 × 51,079,455.60
  4. Step 4: Simplify right side
    66,195,999.60x = 5,071,883,433,698,727
  5. Step 5: Solve for x
    x = 5,071,883,433,698,727/66,195,999.60
  6. Step 6: Final answer
    x = 76,619,183.40

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Similar ratio
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1.5x scale

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.