Home / 81,747.36-112,808.16-49,969.44

Finding the Fourth Proportional to 81,747.36, 112,808.16 and 49,969.44

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Solution

The fourth proportional to 81,747.36, 112,808.16 and 49,969.44 is: 68,955.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,747.36 : 112,808.16 = 49,969.44 : x
  2. Step 2: Convert to fraction form
    81,747.36/112,808.16 = 49,969.44/x
  3. Step 3: Cross multiply
    81,747.36x = 112,808.16 × 49,969.44
  4. Step 4: Simplify right side
    81,747.36x = 5,636,960,582.63
  5. Step 5: Solve for x
    x = 5,636,960,582.63/81,747.36
  6. Step 6: Final answer
    x = 68,955.87

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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.