Home / 81,204.56-121,868.40-34,490.24

Finding the Fourth Proportional to 81,204.56, 121,868.40 and 34,490.24

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Solution

The fourth proportional to 81,204.56, 121,868.40 and 34,490.24 is: 51,761.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,204.56 : 121,868.40 = 34,490.24 : x
  2. Step 2: Convert to fraction form
    81,204.56/121,868.40 = 34,490.24/x
  3. Step 3: Cross multiply
    81,204.56x = 121,868.40 × 34,490.24
  4. Step 4: Simplify right side
    81,204.56x = 4,203,270,364.42
  5. Step 5: Solve for x
    x = 4,203,270,364.42/81,204.56
  6. Step 6: Final answer
    x = 51,761.51

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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.