Home / 78,579.70-117,880.55-25,253.76

Finding the Fourth Proportional to 78,579.70, 117,880.55 and 25,253.76

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Solution

The fourth proportional to 78,579.70, 117,880.55 and 25,253.76 is: 37,884.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,579.70 : 117,880.55 = 25,253.76 : x
  2. Step 2: Convert to fraction form
    78,579.70/117,880.55 = 25,253.76/x
  3. Step 3: Cross multiply
    78,579.70x = 117,880.55 × 25,253.76
  4. Step 4: Simplify right side
    78,579.70x = 2,976,927,118.37
  5. Step 5: Solve for x
    x = 2,976,927,118.37/78,579.70
  6. Step 6: Final answer
    x = 37,884.18

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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.