Home / 81,025.92-121,455.48-31,092.72

Finding the Fourth Proportional to 81,025.92, 121,455.48 and 31,092.72

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Solution

The fourth proportional to 81,025.92, 121,455.48 and 31,092.72 is: 46,607.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,025.92 : 121,455.48 = 31,092.72 : x
  2. Step 2: Convert to fraction form
    81,025.92/121,455.48 = 31,092.72/x
  3. Step 3: Cross multiply
    81,025.92x = 121,455.48 × 31,092.72
  4. Step 4: Simplify right side
    81,025.92x = 3,776,381,232.11
  5. Step 5: Solve for x
    x = 3,776,381,232.11/81,025.92
  6. Step 6: Final answer
    x = 46,607.08

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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.