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Finding the Fourth Proportional to 73,249.68, 109,874.48 and 69,509.90

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Solution

The fourth proportional to 73,249.68, 109,874.48 and 69,509.90 is: 104,264.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,249.68 : 109,874.48 = 69,509.90 : x
  2. Step 2: Convert to fraction form
    73,249.68/109,874.48 = 69,509.90/x
  3. Step 3: Cross multiply
    73,249.68x = 109,874.48 × 69,509.90
  4. Step 4: Simplify right side
    73,249.68x = 7,637,364,117.35
  5. Step 5: Solve for x
    x = 7,637,364,117.35/73,249.68
  6. Step 6: Final answer
    x = 104,264.81

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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.