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Finding the Fourth Proportional to 64,405.60, 96,608.40 and 43,410.40

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Solution

The fourth proportional to 64,405.60, 96,608.40 and 43,410.40 is: 65,115.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,405.60 : 96,608.40 = 43,410.40 : x
  2. Step 2: Convert to fraction form
    64,405.60/96,608.40 = 43,410.40/x
  3. Step 3: Cross multiply
    64,405.60x = 96,608.40 × 43,410.40
  4. Step 4: Simplify right side
    64,405.60x = 4,193,809,287.36
  5. Step 5: Solve for x
    x = 4,193,809,287.36/64,405.60
  6. Step 6: Final answer
    x = 65,115.60

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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.