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Finding the Fourth Proportional to 74,757.92, 112,136.88 and 35,319

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Solution

The fourth proportional to 74,757.92, 112,136.88 and 35,319 is: 52,978.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,757.92 : 112,136.88 = 35,319 : x
  2. Step 2: Convert to fraction form
    74,757.92/112,136.88 = 35,319/x
  3. Step 3: Cross multiply
    74,757.92x = 112,136.88 × 35,319
  4. Step 4: Simplify right side
    74,757.92x = 3,960,562,464.72
  5. Step 5: Solve for x
    x = 3,960,562,464.72/74,757.92
  6. Step 6: Final answer
    x = 52,978.50

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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.