Home / 81,668.14-122,470.58-31,741.70

Finding the Fourth Proportional to 81,668.14, 122,470.58 and 31,741.70

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Solution

The fourth proportional to 81,668.14, 122,470.58 and 31,741.70 is: 47,600.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,668.14 : 122,470.58 = 31,741.70 : x
  2. Step 2: Convert to fraction form
    81,668.14/122,470.58 = 31,741.70/x
  3. Step 3: Cross multiply
    81,668.14x = 122,470.58 × 31,741.70
  4. Step 4: Simplify right side
    81,668.14x = 3,887,423,876.19
  5. Step 5: Solve for x
    x = 3,887,423,876.19/81,668.14
  6. Step 6: Final answer
    x = 47,600.25

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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.