Home / 81,833.18-122,748.95-28,525.05

Finding the Fourth Proportional to 81,833.18, 122,748.95 and 28,525.05

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Solution

The fourth proportional to 81,833.18, 122,748.95 and 28,525.05 is: 42,787.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,833.18 : 122,748.95 = 28,525.05 : x
  2. Step 2: Convert to fraction form
    81,833.18/122,748.95 = 28,525.05/x
  3. Step 3: Cross multiply
    81,833.18x = 122,748.95 × 28,525.05
  4. Step 4: Simplify right side
    81,833.18x = 3,501,420,467.82
  5. Step 5: Solve for x
    x = 3,501,420,467.82/81,833.18
  6. Step 6: Final answer
    x = 42,787.30

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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.