Home / 81,202,209.30-121,754,669.16-25,846,131.48

Finding the Fourth Proportional to 81,202,209.30, 121,754,669.16 and 25,846,131.48

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Solution

The fourth proportional to 81,202,209.30, 121,754,669.16 and 25,846,131.48 is: 38,753,713.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,202,209.30 : 121,754,669.16 = 25,846,131.48 : x
  2. Step 2: Convert to fraction form
    81,202,209.30/121,754,669.16 = 25,846,131.48/x
  3. Step 3: Cross multiply
    81,202,209.30x = 121,754,669.16 × 25,846,131.48
  4. Step 4: Simplify right side
    81,202,209.30x = 3,146,887,187,413,261
  5. Step 5: Solve for x
    x = 3,146,887,187,413,261/81,202,209.30
  6. Step 6: Final answer
    x = 38,753,713.90

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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.