Home / 81,569.11-122,339.09-51,898.81

Finding the Fourth Proportional to 81,569.11, 122,339.09 and 51,898.81

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Solution

The fourth proportional to 81,569.11, 122,339.09 and 51,898.81 is: 77,838.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,569.11 : 122,339.09 = 51,898.81 : x
  2. Step 2: Convert to fraction form
    81,569.11/122,339.09 = 51,898.81/x
  3. Step 3: Cross multiply
    81,569.11x = 122,339.09 × 51,898.81
  4. Step 4: Simplify right side
    81,569.11x = 6,349,253,187.48
  5. Step 5: Solve for x
    x = 6,349,253,187.48/81,569.11
  6. Step 6: Final answer
    x = 77,838.94

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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.