Home / 78,374.24-117,571.44-25,789.04

Finding the Fourth Proportional to 78,374.24, 117,571.44 and 25,789.04

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Solution

The fourth proportional to 78,374.24, 117,571.44 and 25,789.04 is: 38,686.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,374.24 : 117,571.44 = 25,789.04 : x
  2. Step 2: Convert to fraction form
    78,374.24/117,571.44 = 25,789.04/x
  3. Step 3: Cross multiply
    78,374.24x = 117,571.44 × 25,789.04
  4. Step 4: Simplify right side
    78,374.24x = 3,032,054,569.02
  5. Step 5: Solve for x
    x = 3,032,054,569.02/78,374.24
  6. Step 6: Final answer
    x = 38,686.88

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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.