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Finding the Fourth Proportional to 87,010.80, 120,074.80 and 49,292.32

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Solution

The fourth proportional to 87,010.80, 120,074.80 and 49,292.32 is: 68,023.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,010.80 : 120,074.80 = 49,292.32 : x
  2. Step 2: Convert to fraction form
    87,010.80/120,074.80 = 49,292.32/x
  3. Step 3: Cross multiply
    87,010.80x = 120,074.80 × 49,292.32
  4. Step 4: Simplify right side
    87,010.80x = 5,918,765,465.54
  5. Step 5: Solve for x
    x = 5,918,765,465.54/87,010.80
  6. Step 6: Final answer
    x = 68,023.34

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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.