Home / 81,628.90-112,659.25-45,338.50

Finding the Fourth Proportional to 81,628.90, 112,659.25 and 45,338.50

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Solution

The fourth proportional to 81,628.90, 112,659.25 and 45,338.50 is: 62,573.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,628.90 : 112,659.25 = 45,338.50 : x
  2. Step 2: Convert to fraction form
    81,628.90/112,659.25 = 45,338.50/x
  3. Step 3: Cross multiply
    81,628.90x = 112,659.25 × 45,338.50
  4. Step 4: Simplify right side
    81,628.90x = 5,107,801,406.13
  5. Step 5: Solve for x
    x = 5,107,801,406.13/81,628.90
  6. Step 6: Final answer
    x = 62,573.44

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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.