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Finding the Fourth Proportional to 64,453.60, 96,680.40 and 43,458.40

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Solution

The fourth proportional to 64,453.60, 96,680.40 and 43,458.40 is: 65,187.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,453.60 : 96,680.40 = 43,458.40 : x
  2. Step 2: Convert to fraction form
    64,453.60/96,680.40 = 43,458.40/x
  3. Step 3: Cross multiply
    64,453.60x = 96,680.40 × 43,458.40
  4. Step 4: Simplify right side
    64,453.60x = 4,201,575,495.36
  5. Step 5: Solve for x
    x = 4,201,575,495.36/64,453.60
  6. Step 6: Final answer
    x = 65,187.60

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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.