Home / 78,650.30-117,381.26-73,317.43

Finding the Fourth Proportional to 78,650.30, 117,381.26 and 73,317.43

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Solution

The fourth proportional to 78,650.30, 117,381.26 and 73,317.43 is: 109,422.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,650.30 : 117,381.26 = 73,317.43 : x
  2. Step 2: Convert to fraction form
    78,650.30/117,381.26 = 73,317.43/x
  3. Step 3: Cross multiply
    78,650.30x = 117,381.26 × 73,317.43
  4. Step 4: Simplify right side
    78,650.30x = 8,606,091,946.77
  5. Step 5: Solve for x
    x = 8,606,091,946.77/78,650.30
  6. Step 6: Final answer
    x = 109,422.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.