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Finding the Fourth Proportional to 65,760.60, 98,640.90 and 40,877.40

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Solution

The fourth proportional to 65,760.60, 98,640.90 and 40,877.40 is: 61,316.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,760.60 : 98,640.90 = 40,877.40 : x
  2. Step 2: Convert to fraction form
    65,760.60/98,640.90 = 40,877.40/x
  3. Step 3: Cross multiply
    65,760.60x = 98,640.90 × 40,877.40
  4. Step 4: Simplify right side
    65,760.60x = 4,032,183,525.66
  5. Step 5: Solve for x
    x = 4,032,183,525.66/65,760.60
  6. Step 6: Final answer
    x = 61,316.10

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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.