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Finding the Fourth Proportional to 64,469.48, 88,999.63 and 40,632.80

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Solution

The fourth proportional to 64,469.48, 88,999.63 and 40,632.80 is: 56,093.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,469.48 : 88,999.63 = 40,632.80 : x
  2. Step 2: Convert to fraction form
    64,469.48/88,999.63 = 40,632.80/x
  3. Step 3: Cross multiply
    64,469.48x = 88,999.63 × 40,632.80
  4. Step 4: Simplify right side
    64,469.48x = 3,616,303,619.28
  5. Step 5: Solve for x
    x = 3,616,303,619.28/64,469.48
  6. Step 6: Final answer
    x = 56,093.27

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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.