Home / 81,501.86-122,279.42-39,386.79

Finding the Fourth Proportional to 81,501.86, 122,279.42 and 39,386.79

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Solution

The fourth proportional to 81,501.86, 122,279.42 and 39,386.79 is: 59,093.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,501.86 : 122,279.42 = 39,386.79 : x
  2. Step 2: Convert to fraction form
    81,501.86/122,279.42 = 39,386.79/x
  3. Step 3: Cross multiply
    81,501.86x = 122,279.42 × 39,386.79
  4. Step 4: Simplify right side
    81,501.86x = 4,816,193,935.33
  5. Step 5: Solve for x
    x = 4,816,193,935.33/81,501.86
  6. Step 6: Final answer
    x = 59,093.05

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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.