Home / 78,188.62-117,194.91-38,774.02

Finding the Fourth Proportional to 78,188.62, 117,194.91 and 38,774.02

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Solution

The fourth proportional to 78,188.62, 117,194.91 and 38,774.02 is: 58,117.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,188.62 : 117,194.91 = 38,774.02 : x
  2. Step 2: Convert to fraction form
    78,188.62/117,194.91 = 38,774.02/x
  3. Step 3: Cross multiply
    78,188.62x = 117,194.91 × 38,774.02
  4. Step 4: Simplify right side
    78,188.62x = 4,544,117,784.24
  5. Step 5: Solve for x
    x = 4,544,117,784.24/78,188.62
  6. Step 6: Final answer
    x = 58,117.38

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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.