Home / 78,391.56-117,585.64-19,227.52

Finding the Fourth Proportional to 78,391.56, 117,585.64 and 19,227.52

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Solution

The fourth proportional to 78,391.56, 117,585.64 and 19,227.52 is: 28,840.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,391.56 : 117,585.64 = 19,227.52 : x
  2. Step 2: Convert to fraction form
    78,391.56/117,585.64 = 19,227.52/x
  3. Step 3: Cross multiply
    78,391.56x = 117,585.64 × 19,227.52
  4. Step 4: Simplify right side
    78,391.56x = 2,260,880,244.81
  5. Step 5: Solve for x
    x = 2,260,880,244.81/78,391.56
  6. Step 6: Final answer
    x = 28,840.86

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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.