Home / 78,531.50-117,835.05-39,092.06

Finding the Fourth Proportional to 78,531.50, 117,835.05 and 39,092.06

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Solution

The fourth proportional to 78,531.50, 117,835.05 and 39,092.06 is: 58,656.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,531.50 : 117,835.05 = 39,092.06 : x
  2. Step 2: Convert to fraction form
    78,531.50/117,835.05 = 39,092.06/x
  3. Step 3: Cross multiply
    78,531.50x = 117,835.05 × 39,092.06
  4. Step 4: Simplify right side
    78,531.50x = 4,606,414,844.70
  5. Step 5: Solve for x
    x = 4,606,414,844.70/78,531.50
  6. Step 6: Final answer
    x = 58,656.91

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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.