Home / 78,123.19-117,028.04-35,944.51

Finding the Fourth Proportional to 78,123.19, 117,028.04 and 35,944.51

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Solution

The fourth proportional to 78,123.19, 117,028.04 and 35,944.51 is: 53,844.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,123.19 : 117,028.04 = 35,944.51 : x
  2. Step 2: Convert to fraction form
    78,123.19/117,028.04 = 35,944.51/x
  3. Step 3: Cross multiply
    78,123.19x = 117,028.04 × 35,944.51
  4. Step 4: Simplify right side
    78,123.19x = 4,206,514,968.92
  5. Step 5: Solve for x
    x = 4,206,514,968.92/78,123.19
  6. Step 6: Final answer
    x = 53,844.64

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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.