Home / 78,582.75-117,892.55-25,991.88

Finding the Fourth Proportional to 78,582.75, 117,892.55 and 25,991.88

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Solution

The fourth proportional to 78,582.75, 117,892.55 and 25,991.88 is: 38,993.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,582.75 : 117,892.55 = 25,991.88 : x
  2. Step 2: Convert to fraction form
    78,582.75/117,892.55 = 25,991.88/x
  3. Step 3: Cross multiply
    78,582.75x = 117,892.55 × 25,991.88
  4. Step 4: Simplify right side
    78,582.75x = 3,064,249,012.49
  5. Step 5: Solve for x
    x = 3,064,249,012.49/78,582.75
  6. Step 6: Final answer
    x = 38,993.91

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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.