Home / 81,285.08-121,927.82-43,862.76

Finding the Fourth Proportional to 81,285.08, 121,927.82 and 43,862.76

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Solution

The fourth proportional to 81,285.08, 121,927.82 and 43,862.76 is: 65,794.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,285.08 : 121,927.82 = 43,862.76 : x
  2. Step 2: Convert to fraction form
    81,285.08/121,927.82 = 43,862.76/x
  3. Step 3: Cross multiply
    81,285.08x = 121,927.82 × 43,862.76
  4. Step 4: Simplify right side
    81,285.08x = 5,348,090,486.67
  5. Step 5: Solve for x
    x = 5,348,090,486.67/81,285.08
  6. Step 6: Final answer
    x = 65,794.25

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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.