Home / 81,973.62-112,885.38-71,213.58

Finding the Fourth Proportional to 81,973.62, 112,885.38 and 71,213.58

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Solution

The fourth proportional to 81,973.62, 112,885.38 and 71,213.58 is: 98,067.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,973.62 : 112,885.38 = 71,213.58 : x
  2. Step 2: Convert to fraction form
    81,973.62/112,885.38 = 71,213.58/x
  3. Step 3: Cross multiply
    81,973.62x = 112,885.38 × 71,213.58
  4. Step 4: Simplify right side
    81,973.62x = 8,038,972,039.46
  5. Step 5: Solve for x
    x = 8,038,972,039.46/81,973.62
  6. Step 6: Final answer
    x = 98,067.79

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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.