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Finding the Fourth Proportional to 83,626.80, 115,399.80 and 45,900.78

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Solution

The fourth proportional to 83,626.80, 115,399.80 and 45,900.78 is: 63,340.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,626.80 : 115,399.80 = 45,900.78 : x
  2. Step 2: Convert to fraction form
    83,626.80/115,399.80 = 45,900.78/x
  3. Step 3: Cross multiply
    83,626.80x = 115,399.80 × 45,900.78
  4. Step 4: Simplify right side
    83,626.80x = 5,296,940,831.84
  5. Step 5: Solve for x
    x = 5,296,940,831.84/83,626.80
  6. Step 6: Final answer
    x = 63,340.23

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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.