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Finding the Fourth Proportional to 81,664.97, 112,703.22 and 45,370.67

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Solution

The fourth proportional to 81,664.97, 112,703.22 and 45,370.67 is: 62,614.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,664.97 : 112,703.22 = 45,370.67 : x
  2. Step 2: Convert to fraction form
    81,664.97/112,703.22 = 45,370.67/x
  3. Step 3: Cross multiply
    81,664.97x = 112,703.22 × 45,370.67
  4. Step 4: Simplify right side
    81,664.97x = 5,113,420,602.56
  5. Step 5: Solve for x
    x = 5,113,420,602.56/81,664.97
  6. Step 6: Final answer
    x = 62,614.61

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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.