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Finding the Fourth Proportional to 64,289.68, 88,727.34 and 35,989.90

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Solution

The fourth proportional to 64,289.68, 88,727.34 and 35,989.90 is: 49,670.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,289.68 : 88,727.34 = 35,989.90 : x
  2. Step 2: Convert to fraction form
    64,289.68/88,727.34 = 35,989.90/x
  3. Step 3: Cross multiply
    64,289.68x = 88,727.34 × 35,989.90
  4. Step 4: Simplify right side
    64,289.68x = 3,193,288,093.87
  5. Step 5: Solve for x
    x = 3,193,288,093.87/64,289.68
  6. Step 6: Final answer
    x = 49,670.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.