Home / 78,376.19-117,562.22-27,774.47

Finding the Fourth Proportional to 78,376.19, 117,562.22 and 27,774.47

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Solution

The fourth proportional to 78,376.19, 117,562.22 and 27,774.47 is: 41,660.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,376.19 : 117,562.22 = 27,774.47 : x
  2. Step 2: Convert to fraction form
    78,376.19/117,562.22 = 27,774.47/x
  3. Step 3: Cross multiply
    78,376.19x = 117,562.22 × 27,774.47
  4. Step 4: Simplify right side
    78,376.19x = 3,265,228,715.87
  5. Step 5: Solve for x
    x = 3,265,228,715.87/78,376.19
  6. Step 6: Final answer
    x = 41,660.98

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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.