Home / 72,664.88-108,985.02-20,074.52

Finding the Fourth Proportional to 72,664.88, 108,985.02 and 20,074.52

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Solution

The fourth proportional to 72,664.88, 108,985.02 and 20,074.52 is: 30,108.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,664.88 : 108,985.02 = 20,074.52 : x
  2. Step 2: Convert to fraction form
    72,664.88/108,985.02 = 20,074.52/x
  3. Step 3: Cross multiply
    72,664.88x = 108,985.02 × 20,074.52
  4. Step 4: Simplify right side
    72,664.88x = 2,187,821,418.77
  5. Step 5: Solve for x
    x = 2,187,821,418.77/72,664.88
  6. Step 6: Final answer
    x = 30,108.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.