Home / 78,495.11-117,733.90-21,573.37

Finding the Fourth Proportional to 78,495.11, 117,733.90 and 21,573.37

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Solution

The fourth proportional to 78,495.11, 117,733.90 and 21,573.37 is: 32,357.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,495.11 : 117,733.90 = 21,573.37 : x
  2. Step 2: Convert to fraction form
    78,495.11/117,733.90 = 21,573.37/x
  3. Step 3: Cross multiply
    78,495.11x = 117,733.90 × 21,573.37
  4. Step 4: Simplify right side
    78,495.11x = 2,539,916,986.24
  5. Step 5: Solve for x
    x = 2,539,916,986.24/78,495.11
  6. Step 6: Final answer
    x = 32,357.65

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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.