Home / 87,860.86-121,256.67-50,140.78

Finding the Fourth Proportional to 87,860.86, 121,256.67 and 50,140.78

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Solution

The fourth proportional to 87,860.86, 121,256.67 and 50,140.78 is: 69,199.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,860.86 : 121,256.67 = 50,140.78 : x
  2. Step 2: Convert to fraction form
    87,860.86/121,256.67 = 50,140.78/x
  3. Step 3: Cross multiply
    87,860.86x = 121,256.67 × 50,140.78
  4. Step 4: Simplify right side
    87,860.86x = 6,079,904,014.00
  5. Step 5: Solve for x
    x = 6,079,904,014.00/87,860.86
  6. Step 6: Final answer
    x = 69,199.23

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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.