Home / 81,401.44-112,272.21-71,312.36

Finding the Fourth Proportional to 81,401.44, 112,272.21 and 71,312.36

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Solution

The fourth proportional to 81,401.44, 112,272.21 and 71,312.36 is: 98,356.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,401.44 : 112,272.21 = 71,312.36 : x
  2. Step 2: Convert to fraction form
    81,401.44/112,272.21 = 71,312.36/x
  3. Step 3: Cross multiply
    81,401.44x = 112,272.21 × 71,312.36
  4. Step 4: Simplify right side
    81,401.44x = 8,006,396,257.52
  5. Step 5: Solve for x
    x = 8,006,396,257.52/81,401.44
  6. Step 6: Final answer
    x = 98,356.94

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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.