Home / 81,717.80-112,804.92-76,610.48

Finding the Fourth Proportional to 81,717.80, 112,804.92 and 76,610.48

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Solution

The fourth proportional to 81,717.80, 112,804.92 and 76,610.48 is: 105,754.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,717.80 : 112,804.92 = 76,610.48 : x
  2. Step 2: Convert to fraction form
    81,717.80/112,804.92 = 76,610.48/x
  3. Step 3: Cross multiply
    81,717.80x = 112,804.92 × 76,610.48
  4. Step 4: Simplify right side
    81,717.80x = 8,642,038,503.54
  5. Step 5: Solve for x
    x = 8,642,038,503.54/81,717.80
  6. Step 6: Final answer
    x = 105,754.67

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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.