Home / 81,450.89-112,402.08-49,619.79

Finding the Fourth Proportional to 81,450.89, 112,402.08 and 49,619.79

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Solution

The fourth proportional to 81,450.89, 112,402.08 and 49,619.79 is: 68,475.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,450.89 : 112,402.08 = 49,619.79 : x
  2. Step 2: Convert to fraction form
    81,450.89/112,402.08 = 49,619.79/x
  3. Step 3: Cross multiply
    81,450.89x = 112,402.08 × 49,619.79
  4. Step 4: Simplify right side
    81,450.89x = 5,577,367,324.16
  5. Step 5: Solve for x
    x = 5,577,367,324.16/81,450.89
  6. Step 6: Final answer
    x = 68,475.22

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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.