Home / 87,009.23-120,080.31-50,708.78

Finding the Fourth Proportional to 87,009.23, 120,080.31 and 50,708.78

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Solution

The fourth proportional to 87,009.23, 120,080.31 and 50,708.78 is: 69,982.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,009.23 : 120,080.31 = 50,708.78 : x
  2. Step 2: Convert to fraction form
    87,009.23/120,080.31 = 50,708.78/x
  3. Step 3: Cross multiply
    87,009.23x = 120,080.31 × 50,708.78
  4. Step 4: Simplify right side
    87,009.23x = 6,089,125,681.86
  5. Step 5: Solve for x
    x = 6,089,125,681.86/87,009.23
  6. Step 6: Final answer
    x = 69,982.52

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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.