Home / 81,032.22-121,539.23-31,077.27

Finding the Fourth Proportional to 81,032.22, 121,539.23 and 31,077.27

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Solution

The fourth proportional to 81,032.22, 121,539.23 and 31,077.27 is: 46,612.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,032.22 : 121,539.23 = 31,077.27 : x
  2. Step 2: Convert to fraction form
    81,032.22/121,539.23 = 31,077.27/x
  3. Step 3: Cross multiply
    81,032.22x = 121,539.23 × 31,077.27
  4. Step 4: Simplify right side
    81,032.22x = 3,777,107,830.15
  5. Step 5: Solve for x
    x = 3,777,107,830.15/81,032.22
  6. Step 6: Final answer
    x = 46,612.42

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1.5x scale

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.