Home / 86,028.88-118,732.79-61,909.69

Finding the Fourth Proportional to 86,028.88, 118,732.79 and 61,909.69

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Solution

The fourth proportional to 86,028.88, 118,732.79 and 61,909.69 is: 85,444.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,028.88 : 118,732.79 = 61,909.69 : x
  2. Step 2: Convert to fraction form
    86,028.88/118,732.79 = 61,909.69/x
  3. Step 3: Cross multiply
    86,028.88x = 118,732.79 × 61,909.69
  4. Step 4: Simplify right side
    86,028.88x = 7,350,709,615.35
  5. Step 5: Solve for x
    x = 7,350,709,615.35/86,028.88
  6. Step 6: Final answer
    x = 85,444.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.