Home / 72,755,120.40-109,132,680.60-43,986,447.60

Finding the Fourth Proportional to 72,755,120.40, 109,132,680.60 and 43,986,447.60

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Solution

The fourth proportional to 72,755,120.40, 109,132,680.60 and 43,986,447.60 is: 65,979,671.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,755,120.40 : 109,132,680.60 = 43,986,447.60 : x
  2. Step 2: Convert to fraction form
    72,755,120.40/109,132,680.60 = 43,986,447.60/x
  3. Step 3: Cross multiply
    72,755,120.40x = 109,132,680.60 × 43,986,447.60
  4. Step 4: Simplify right side
    72,755,120.40x = 4,800,358,936,659,436
  5. Step 5: Solve for x
    x = 4,800,358,936,659,436/72,755,120.40
  6. Step 6: Final answer
    x = 65,979,671.40

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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.