Home / 78,748.74-117,991.61-55,333.26

Finding the Fourth Proportional to 78,748.74, 117,991.61 and 55,333.26

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Solution

The fourth proportional to 78,748.74, 117,991.61 and 55,333.26 is: 82,907.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,748.74 : 117,991.61 = 55,333.26 : x
  2. Step 2: Convert to fraction form
    78,748.74/117,991.61 = 55,333.26/x
  3. Step 3: Cross multiply
    78,748.74x = 117,991.61 × 55,333.26
  4. Step 4: Simplify right side
    78,748.74x = 6,528,860,572.28
  5. Step 5: Solve for x
    x = 6,528,860,572.28/78,748.74
  6. Step 6: Final answer
    x = 82,907.49

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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.