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Finding the Fourth Proportional to 67,730.56, 94,031.20 and 65,703.04

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Solution

The fourth proportional to 67,730.56, 94,031.20 and 65,703.04 is: 91,216.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,730.56 : 94,031.20 = 65,703.04 : x
  2. Step 2: Convert to fraction form
    67,730.56/94,031.20 = 65,703.04/x
  3. Step 3: Cross multiply
    67,730.56x = 94,031.20 × 65,703.04
  4. Step 4: Simplify right side
    67,730.56x = 6,178,135,694.85
  5. Step 5: Solve for x
    x = 6,178,135,694.85/67,730.56
  6. Step 6: Final answer
    x = 91,216.37

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.