Home / 81,738.29-112,795.25-47,749.93

Finding the Fourth Proportional to 81,738.29, 112,795.25 and 47,749.93

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Solution

The fourth proportional to 81,738.29, 112,795.25 and 47,749.93 is: 65,892.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,738.29 : 112,795.25 = 47,749.93 : x
  2. Step 2: Convert to fraction form
    81,738.29/112,795.25 = 47,749.93/x
  3. Step 3: Cross multiply
    81,738.29x = 112,795.25 × 47,749.93
  4. Step 4: Simplify right side
    81,738.29x = 5,385,964,771.09
  5. Step 5: Solve for x
    x = 5,385,964,771.09/81,738.29
  6. Step 6: Final answer
    x = 65,892.80

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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.