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Finding the Fourth Proportional to 65,957,695.20, 98,936,542.80 and 49,589,312.40

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Solution

The fourth proportional to 65,957,695.20, 98,936,542.80 and 49,589,312.40 is: 74,383,968.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,957,695.20 : 98,936,542.80 = 49,589,312.40 : x
  2. Step 2: Convert to fraction form
    65,957,695.20/98,936,542.80 = 49,589,312.40/x
  3. Step 3: Cross multiply
    65,957,695.20x = 98,936,542.80 × 49,589,312.40
  4. Step 4: Simplify right side
    65,957,695.20x = 4,906,195,128,685,170
  5. Step 5: Solve for x
    x = 4,906,195,128,685,170/65,957,695.20
  6. Step 6: Final answer
    x = 74,383,968.60

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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.