Home / 81,336.26-121,980.92-28,026.06

Finding the Fourth Proportional to 81,336.26, 121,980.92 and 28,026.06

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Solution

The fourth proportional to 81,336.26, 121,980.92 and 28,026.06 is: 42,031.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,336.26 : 121,980.92 = 28,026.06 : x
  2. Step 2: Convert to fraction form
    81,336.26/121,980.92 = 28,026.06/x
  3. Step 3: Cross multiply
    81,336.26x = 121,980.92 × 28,026.06
  4. Step 4: Simplify right side
    81,336.26x = 3,418,644,442.64
  5. Step 5: Solve for x
    x = 3,418,644,442.64/81,336.26
  6. Step 6: Final answer
    x = 42,031.00

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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.