Home / 81,747.39-122,668.40-34,358.74

Finding the Fourth Proportional to 81,747.39, 122,668.40 and 34,358.74

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Solution

The fourth proportional to 81,747.39, 122,668.40 and 34,358.74 is: 51,558.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,747.39 : 122,668.40 = 34,358.74 : x
  2. Step 2: Convert to fraction form
    81,747.39/122,668.40 = 34,358.74/x
  3. Step 3: Cross multiply
    81,747.39x = 122,668.40 × 34,358.74
  4. Step 4: Simplify right side
    81,747.39x = 4,214,731,661.82
  5. Step 5: Solve for x
    x = 4,214,731,661.82/81,747.39
  6. Step 6: Final answer
    x = 51,558.00

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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.