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Finding the Fourth Proportional to 40,470.84, 60,649.97 and 20,707.65

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Solution

The fourth proportional to 40,470.84, 60,649.97 and 20,707.65 is: 31,032.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,470.84 : 60,649.97 = 20,707.65 : x
  2. Step 2: Convert to fraction form
    40,470.84/60,649.97 = 20,707.65/x
  3. Step 3: Cross multiply
    40,470.84x = 60,649.97 × 20,707.65
  4. Step 4: Simplify right side
    40,470.84x = 1,255,918,247.73
  5. Step 5: Solve for x
    x = 1,255,918,247.73/40,470.84
  6. Step 6: Final answer
    x = 31,032.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.