Home / 87,121.14-120,269.42-58,430.32

Finding the Fourth Proportional to 87,121.14, 120,269.42 and 58,430.32

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Solution

The fourth proportional to 87,121.14, 120,269.42 and 58,430.32 is: 80,662.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,121.14 : 120,269.42 = 58,430.32 : x
  2. Step 2: Convert to fraction form
    87,121.14/120,269.42 = 58,430.32/x
  3. Step 3: Cross multiply
    87,121.14x = 120,269.42 × 58,430.32
  4. Step 4: Simplify right side
    87,121.14x = 7,027,380,696.81
  5. Step 5: Solve for x
    x = 7,027,380,696.81/87,121.14
  6. Step 6: Final answer
    x = 80,662.18

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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.