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Finding the Fourth Proportional to 79,238.64, 118,732.08 and 64,375.20

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Solution

The fourth proportional to 79,238.64, 118,732.08 and 64,375.20 is: 96,460.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,238.64 : 118,732.08 = 64,375.20 : x
  2. Step 2: Convert to fraction form
    79,238.64/118,732.08 = 64,375.20/x
  3. Step 3: Cross multiply
    79,238.64x = 118,732.08 × 64,375.20
  4. Step 4: Simplify right side
    79,238.64x = 7,643,401,396.42
  5. Step 5: Solve for x
    x = 7,643,401,396.42/79,238.64
  6. Step 6: Final answer
    x = 96,460.53

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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.