Home / 81,555.36-112,546.80-45,743.28

Finding the Fourth Proportional to 81,555.36, 112,546.80 and 45,743.28

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Solution

The fourth proportional to 81,555.36, 112,546.80 and 45,743.28 is: 63,125.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,555.36 : 112,546.80 = 45,743.28 : x
  2. Step 2: Convert to fraction form
    81,555.36/112,546.80 = 45,743.28/x
  3. Step 3: Cross multiply
    81,555.36x = 112,546.80 × 45,743.28
  4. Step 4: Simplify right side
    81,555.36x = 5,148,259,785.50
  5. Step 5: Solve for x
    x = 5,148,259,785.50/81,555.36
  6. Step 6: Final answer
    x = 63,125.95

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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.