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Finding the Fourth Proportional to 75,722.42, 112,689.77 and 73,199.68

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Solution

The fourth proportional to 75,722.42, 112,689.77 and 73,199.68 is: 108,935.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,722.42 : 112,689.77 = 73,199.68 : x
  2. Step 2: Convert to fraction form
    75,722.42/112,689.77 = 73,199.68/x
  3. Step 3: Cross multiply
    75,722.42x = 112,689.77 × 73,199.68
  4. Step 4: Simplify right side
    75,722.42x = 8,248,855,103.27
  5. Step 5: Solve for x
    x = 8,248,855,103.27/75,722.42
  6. Step 6: Final answer
    x = 108,935.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.