Home / 81,875.90-122,817.32-28,573.24

Finding the Fourth Proportional to 81,875.90, 122,817.32 and 28,573.24

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Solution

The fourth proportional to 81,875.90, 122,817.32 and 28,573.24 is: 42,861.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,875.90 : 122,817.32 = 28,573.24 : x
  2. Step 2: Convert to fraction form
    81,875.90/122,817.32 = 28,573.24/x
  3. Step 3: Cross multiply
    81,875.90x = 122,817.32 × 28,573.24
  4. Step 4: Simplify right side
    81,875.90x = 3,509,288,760.52
  5. Step 5: Solve for x
    x = 3,509,288,760.52/81,875.90
  6. Step 6: Final answer
    x = 42,861.07

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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.