Home / 83,518.31-125,284.77-21,188.81

Finding the Fourth Proportional to 83,518.31, 125,284.77 and 21,188.81

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Solution

The fourth proportional to 83,518.31, 125,284.77 and 21,188.81 is: 31,785.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,518.31 : 125,284.77 = 21,188.81 : x
  2. Step 2: Convert to fraction form
    83,518.31/125,284.77 = 21,188.81/x
  3. Step 3: Cross multiply
    83,518.31x = 125,284.77 × 21,188.81
  4. Step 4: Simplify right side
    83,518.31x = 2,654,635,500.64
  5. Step 5: Solve for x
    x = 2,654,635,500.64/83,518.31
  6. Step 6: Final answer
    x = 31,785.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.