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Finding the Fourth Proportional to 64,289.60, 96,693.60 and 57,550.40

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Solution

The fourth proportional to 64,289.60, 96,693.60 and 57,550.40 is: 86,557.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,289.60 : 96,693.60 = 57,550.40 : x
  2. Step 2: Convert to fraction form
    64,289.60/96,693.60 = 57,550.40/x
  3. Step 3: Cross multiply
    64,289.60x = 96,693.60 × 57,550.40
  4. Step 4: Simplify right side
    64,289.60x = 5,564,755,357.44
  5. Step 5: Solve for x
    x = 5,564,755,357.44/64,289.60
  6. Step 6: Final answer
    x = 86,557.63

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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.