Home / 81,046.56-121,606.29-51,456.45

Finding the Fourth Proportional to 81,046.56, 121,606.29 and 51,456.45

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Solution

The fourth proportional to 81,046.56, 121,606.29 and 51,456.45 is: 77,207.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,046.56 : 121,606.29 = 51,456.45 : x
  2. Step 2: Convert to fraction form
    81,046.56/121,606.29 = 51,456.45/x
  3. Step 3: Cross multiply
    81,046.56x = 121,606.29 × 51,456.45
  4. Step 4: Simplify right side
    81,046.56x = 6,257,427,981.07
  5. Step 5: Solve for x
    x = 6,257,427,981.07/81,046.56
  6. Step 6: Final answer
    x = 77,207.82

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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.