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Finding the Fourth Proportional to 86,532.64, 129,749.28 and 33,880.48

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Solution

The fourth proportional to 86,532.64, 129,749.28 and 33,880.48 is: 50,801.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,532.64 : 129,749.28 = 33,880.48 : x
  2. Step 2: Convert to fraction form
    86,532.64/129,749.28 = 33,880.48/x
  3. Step 3: Cross multiply
    86,532.64x = 129,749.28 × 33,880.48
  4. Step 4: Simplify right side
    86,532.64x = 4,395,967,886.05
  5. Step 5: Solve for x
    x = 4,395,967,886.05/86,532.64
  6. Step 6: Final answer
    x = 50,801.27

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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.