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Finding the Fourth Proportional to 78,768.76, 108,721.56 and 44,797.12

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Solution

The fourth proportional to 78,768.76, 108,721.56 and 44,797.12 is: 61,831.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,768.76 : 108,721.56 = 44,797.12 : x
  2. Step 2: Convert to fraction form
    78,768.76/108,721.56 = 44,797.12/x
  3. Step 3: Cross multiply
    78,768.76x = 108,721.56 × 44,797.12
  4. Step 4: Simplify right side
    78,768.76x = 4,870,412,769.91
  5. Step 5: Solve for x
    x = 4,870,412,769.91/78,768.76
  6. Step 6: Final answer
    x = 61,831.78

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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.