Home / 81,733.92-122,686.80-72,433.44

Finding the Fourth Proportional to 81,733.92, 122,686.80 and 72,433.44

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Solution

The fourth proportional to 81,733.92, 122,686.80 and 72,433.44 is: 108,726.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,733.92 : 122,686.80 = 72,433.44 : x
  2. Step 2: Convert to fraction form
    81,733.92/122,686.80 = 72,433.44/x
  3. Step 3: Cross multiply
    81,733.92x = 122,686.80 × 72,433.44
  4. Step 4: Simplify right side
    81,733.92x = 8,886,626,966.59
  5. Step 5: Solve for x
    x = 8,886,626,966.59/81,733.92
  6. Step 6: Final answer
    x = 108,726.30

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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.