Home / 87,812.86-121,153.16-55,992.02

Finding the Fourth Proportional to 87,812.86, 121,153.16 and 55,992.02

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Solution

The fourth proportional to 87,812.86, 121,153.16 and 55,992.02 is: 77,250.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,812.86 : 121,153.16 = 55,992.02 : x
  2. Step 2: Convert to fraction form
    87,812.86/121,153.16 = 55,992.02/x
  3. Step 3: Cross multiply
    87,812.86x = 121,153.16 × 55,992.02
  4. Step 4: Simplify right side
    87,812.86x = 6,783,610,157.78
  5. Step 5: Solve for x
    x = 6,783,610,157.78/87,812.86
  6. Step 6: Final answer
    x = 77,250.76

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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.