Home / 76,309.29-105,203.21-64,351.67

Finding the Fourth Proportional to 76,309.29, 105,203.21 and 64,351.67

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Solution

The fourth proportional to 76,309.29, 105,203.21 and 64,351.67 is: 88,717.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,309.29 : 105,203.21 = 64,351.67 : x
  2. Step 2: Convert to fraction form
    76,309.29/105,203.21 = 64,351.67/x
  3. Step 3: Cross multiply
    76,309.29x = 105,203.21 × 64,351.67
  4. Step 4: Simplify right side
    76,309.29x = 6,770,001,405.09
  5. Step 5: Solve for x
    x = 6,770,001,405.09/76,309.29
  6. Step 6: Final answer
    x = 88,717.92

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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.