Home / 81,131.54-111,963.80-45,325.49

Finding the Fourth Proportional to 81,131.54, 111,963.80 and 45,325.49

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Solution

The fourth proportional to 81,131.54, 111,963.80 and 45,325.49 is: 62,550.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,131.54 : 111,963.80 = 45,325.49 : x
  2. Step 2: Convert to fraction form
    81,131.54/111,963.80 = 45,325.49/x
  3. Step 3: Cross multiply
    81,131.54x = 111,963.80 × 45,325.49
  4. Step 4: Simplify right side
    81,131.54x = 5,074,813,650.76
  5. Step 5: Solve for x
    x = 5,074,813,650.76/81,131.54
  6. Step 6: Final answer
    x = 62,550.45

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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.