Home / 78,613.40-117,827.22-77,736.44

Finding the Fourth Proportional to 78,613.40, 117,827.22 and 77,736.44

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Solution

The fourth proportional to 78,613.40, 117,827.22 and 77,736.44 is: 116,512.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,613.40 : 117,827.22 = 77,736.44 : x
  2. Step 2: Convert to fraction form
    78,613.40/117,827.22 = 77,736.44/x
  3. Step 3: Cross multiply
    78,613.40x = 117,827.22 × 77,736.44
  4. Step 4: Simplify right side
    78,613.40x = 9,159,468,617.90
  5. Step 5: Solve for x
    x = 9,159,468,617.90/78,613.40
  6. Step 6: Final answer
    x = 116,512.82

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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.