Home / 81,835.90-112,910.19-49,116.98

Finding the Fourth Proportional to 81,835.90, 112,910.19 and 49,116.98

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Solution

The fourth proportional to 81,835.90, 112,910.19 and 49,116.98 is: 67,767.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,835.90 : 112,910.19 = 49,116.98 : x
  2. Step 2: Convert to fraction form
    81,835.90/112,910.19 = 49,116.98/x
  3. Step 3: Cross multiply
    81,835.90x = 112,910.19 × 49,116.98
  4. Step 4: Simplify right side
    81,835.90x = 5,545,807,544.03
  5. Step 5: Solve for x
    x = 5,545,807,544.03/81,835.90
  6. Step 6: Final answer
    x = 67,767.42

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1.5x scale

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.