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Finding the Fourth Proportional to 112,662.40, 169,002.40 and 50,339.20

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Solution

The fourth proportional to 112,662.40, 169,002.40 and 50,339.20 is: 75,512.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,662.40 : 169,002.40 = 50,339.20 : x
  2. Step 2: Convert to fraction form
    112,662.40/169,002.40 = 50,339.20/x
  3. Step 3: Cross multiply
    112,662.40x = 169,002.40 × 50,339.20
  4. Step 4: Simplify right side
    112,662.40x = 8,507,445,614.08
  5. Step 5: Solve for x
    x = 8,507,445,614.08/112,662.40
  6. Step 6: Final answer
    x = 75,512.73

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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.