Home / 77,239.58-115,932.47-39,825.68

Finding the Fourth Proportional to 77,239.58, 115,932.47 and 39,825.68

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Solution

The fourth proportional to 77,239.58, 115,932.47 and 39,825.68 is: 59,776.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,239.58 : 115,932.47 = 39,825.68 : x
  2. Step 2: Convert to fraction form
    77,239.58/115,932.47 = 39,825.68/x
  3. Step 3: Cross multiply
    77,239.58x = 115,932.47 × 39,825.68
  4. Step 4: Simplify right side
    77,239.58x = 4,617,088,673.04
  5. Step 5: Solve for x
    x = 4,617,088,673.04/77,239.58
  6. Step 6: Final answer
    x = 59,776.21

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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.