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Finding the Fourth Proportional to 109,047.60, 150,475.32 and 63,736.20

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Solution

The fourth proportional to 109,047.60, 150,475.32 and 63,736.20 is: 87,949.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,047.60 : 150,475.32 = 63,736.20 : x
  2. Step 2: Convert to fraction form
    109,047.60/150,475.32 = 63,736.20/x
  3. Step 3: Cross multiply
    109,047.60x = 150,475.32 × 63,736.20
  4. Step 4: Simplify right side
    109,047.60x = 9,590,725,090.58
  5. Step 5: Solve for x
    x = 9,590,725,090.58/109,047.60
  6. Step 6: Final answer
    x = 87,949.90

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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.