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Finding the Fourth Proportional to 75,333.92, 103,699.85 and 65,120.22

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Solution

The fourth proportional to 75,333.92, 103,699.85 and 65,120.22 is: 89,640.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,333.92 : 103,699.85 = 65,120.22 : x
  2. Step 2: Convert to fraction form
    75,333.92/103,699.85 = 65,120.22/x
  3. Step 3: Cross multiply
    75,333.92x = 103,699.85 × 65,120.22
  4. Step 4: Simplify right side
    75,333.92x = 6,752,956,720.37
  5. Step 5: Solve for x
    x = 6,752,956,720.37/75,333.92
  6. Step 6: Final answer
    x = 89,640.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.