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Finding the Fourth Proportional to 64,860.30, 89,512.65 and 36,571.86

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Solution

The fourth proportional to 64,860.30, 89,512.65 and 36,571.86 is: 50,472.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,860.30 : 89,512.65 = 36,571.86 : x
  2. Step 2: Convert to fraction form
    64,860.30/89,512.65 = 36,571.86/x
  3. Step 3: Cross multiply
    64,860.30x = 89,512.65 × 36,571.86
  4. Step 4: Simplify right side
    64,860.30x = 3,273,644,104.03
  5. Step 5: Solve for x
    x = 3,273,644,104.03/64,860.30
  6. Step 6: Final answer
    x = 50,472.23

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1.5x scale

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.