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Finding the Fourth Proportional to 64,388.76, 96,606 and 28,847.28

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Solution

The fourth proportional to 64,388.76, 96,606 and 28,847.28 is: 43,281.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,388.76 : 96,606 = 28,847.28 : x
  2. Step 2: Convert to fraction form
    64,388.76/96,606 = 28,847.28/x
  3. Step 3: Cross multiply
    64,388.76x = 96,606 × 28,847.28
  4. Step 4: Simplify right side
    64,388.76x = 2,786,820,331.68
  5. Step 5: Solve for x
    x = 2,786,820,331.68/64,388.76
  6. Step 6: Final answer
    x = 43,281.16

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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.