Home / 81,638.60-112,673.58-49,825.96

Finding the Fourth Proportional to 81,638.60, 112,673.58 and 49,825.96

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Solution

The fourth proportional to 81,638.60, 112,673.58 and 49,825.96 is: 68,767.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,638.60 : 112,673.58 = 49,825.96 : x
  2. Step 2: Convert to fraction form
    81,638.60/112,673.58 = 49,825.96/x
  3. Step 3: Cross multiply
    81,638.60x = 112,673.58 × 49,825.96
  4. Step 4: Simplify right side
    81,638.60x = 5,614,069,290.14
  5. Step 5: Solve for x
    x = 5,614,069,290.14/81,638.60
  6. Step 6: Final answer
    x = 68,767.34

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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.