Home / 81,046.84-121,606.64-51,456.76

Finding the Fourth Proportional to 81,046.84, 121,606.64 and 51,456.76

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Solution

The fourth proportional to 81,046.84, 121,606.64 and 51,456.76 is: 77,208.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,046.84 : 121,606.64 = 51,456.76 : x
  2. Step 2: Convert to fraction form
    81,046.84/121,606.64 = 51,456.76/x
  3. Step 3: Cross multiply
    81,046.84x = 121,606.64 × 51,456.76
  4. Step 4: Simplify right side
    81,046.84x = 6,257,483,688.89
  5. Step 5: Solve for x
    x = 6,257,483,688.89/81,046.84
  6. Step 6: Final answer
    x = 77,208.24

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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.