Home / 81,429.57-121,963.91-62,570.79

Finding the Fourth Proportional to 81,429.57, 121,963.91 and 62,570.79

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Solution

The fourth proportional to 81,429.57, 121,963.91 and 62,570.79 is: 93,717.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,429.57 : 121,963.91 = 62,570.79 : x
  2. Step 2: Convert to fraction form
    81,429.57/121,963.91 = 62,570.79/x
  3. Step 3: Cross multiply
    81,429.57x = 121,963.91 × 62,570.79
  4. Step 4: Simplify right side
    81,429.57x = 7,631,377,887.33
  5. Step 5: Solve for x
    x = 7,631,377,887.33/81,429.57
  6. Step 6: Final answer
    x = 93,717.53

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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.