Home / 81,628.83-122,490.54-34,239.69

Finding the Fourth Proportional to 81,628.83, 122,490.54 and 34,239.69

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Solution

The fourth proportional to 81,628.83, 122,490.54 and 34,239.69 is: 51,379.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,628.83 : 122,490.54 = 34,239.69 : x
  2. Step 2: Convert to fraction form
    81,628.83/122,490.54 = 34,239.69/x
  3. Step 3: Cross multiply
    81,628.83x = 122,490.54 × 34,239.69
  4. Step 4: Simplify right side
    81,628.83x = 4,194,038,117.53
  5. Step 5: Solve for x
    x = 4,194,038,117.53/81,628.83
  6. Step 6: Final answer
    x = 51,379.37

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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.