Home / 81,436.83-122,125.22-28,115.24

Finding the Fourth Proportional to 81,436.83, 122,125.22 and 28,115.24

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Solution

The fourth proportional to 81,436.83, 122,125.22 and 28,115.24 is: 42,162.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,436.83 : 122,125.22 = 28,115.24 : x
  2. Step 2: Convert to fraction form
    81,436.83/122,125.22 = 28,115.24/x
  3. Step 3: Cross multiply
    81,436.83x = 122,125.22 × 28,115.24
  4. Step 4: Simplify right side
    81,436.83x = 3,433,579,224.58
  5. Step 5: Solve for x
    x = 3,433,579,224.58/81,436.83
  6. Step 6: Final answer
    x = 42,162.49

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1.5x scale

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.