Home / 81,738.80-112,802.87-45,928.70

Finding the Fourth Proportional to 81,738.80, 112,802.87 and 45,928.70

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Solution

The fourth proportional to 81,738.80, 112,802.87 and 45,928.70 is: 63,383.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,738.80 : 112,802.87 = 45,928.70 : x
  2. Step 2: Convert to fraction form
    81,738.80/112,802.87 = 45,928.70/x
  3. Step 3: Cross multiply
    81,738.80x = 112,802.87 × 45,928.70
  4. Step 4: Simplify right side
    81,738.80x = 5,180,889,175.37
  5. Step 5: Solve for x
    x = 5,180,889,175.37/81,738.80
  6. Step 6: Final answer
    x = 63,383.47

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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.