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Finding the Fourth Proportional to 64,320.86, 88,766.88 and 36,028.28

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Solution

The fourth proportional to 64,320.86, 88,766.88 and 36,028.28 is: 49,721.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,320.86 : 88,766.88 = 36,028.28 : x
  2. Step 2: Convert to fraction form
    64,320.86/88,766.88 = 36,028.28/x
  3. Step 3: Cross multiply
    64,320.86x = 88,766.88 × 36,028.28
  4. Step 4: Simplify right side
    64,320.86x = 3,198,118,007.37
  5. Step 5: Solve for x
    x = 3,198,118,007.37/64,320.86
  6. Step 6: Final answer
    x = 49,721.32

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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.