Home / 78,324.09-108,087.36-42,514.11

Finding the Fourth Proportional to 78,324.09, 108,087.36 and 42,514.11

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Solution

The fourth proportional to 78,324.09, 108,087.36 and 42,514.11 is: 58,669.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,324.09 : 108,087.36 = 42,514.11 : x
  2. Step 2: Convert to fraction form
    78,324.09/108,087.36 = 42,514.11/x
  3. Step 3: Cross multiply
    78,324.09x = 108,087.36 × 42,514.11
  4. Step 4: Simplify right side
    78,324.09x = 4,595,237,912.65
  5. Step 5: Solve for x
    x = 4,595,237,912.65/78,324.09
  6. Step 6: Final answer
    x = 58,669.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.