Home / 84,539.86-126,811.23-31,974.10

Finding the Fourth Proportional to 84,539.86, 126,811.23 and 31,974.10

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Solution

The fourth proportional to 84,539.86, 126,811.23 and 31,974.10 is: 47,961.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,539.86 : 126,811.23 = 31,974.10 : x
  2. Step 2: Convert to fraction form
    84,539.86/126,811.23 = 31,974.10/x
  3. Step 3: Cross multiply
    84,539.86x = 126,811.23 × 31,974.10
  4. Step 4: Simplify right side
    84,539.86x = 4,054,674,949.14
  5. Step 5: Solve for x
    x = 4,054,674,949.14/84,539.86
  6. Step 6: Final answer
    x = 47,961.69

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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.