Home / 78,013.32-117,085.64-73,092.58

Finding the Fourth Proportional to 78,013.32, 117,085.64 and 73,092.58

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Solution

The fourth proportional to 78,013.32, 117,085.64 and 73,092.58 is: 109,700.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,013.32 : 117,085.64 = 73,092.58 : x
  2. Step 2: Convert to fraction form
    78,013.32/117,085.64 = 73,092.58/x
  3. Step 3: Cross multiply
    78,013.32x = 117,085.64 × 73,092.58
  4. Step 4: Simplify right side
    78,013.32x = 8,558,091,508.55
  5. Step 5: Solve for x
    x = 8,558,091,508.55/78,013.32
  6. Step 6: Final answer
    x = 109,700.39

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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.