Home / 78,082.07-117,143.15-21,922.34

Finding the Fourth Proportional to 78,082.07, 117,143.15 and 21,922.34

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Solution

The fourth proportional to 78,082.07, 117,143.15 and 21,922.34 is: 32,889.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,082.07 : 117,143.15 = 21,922.34 : x
  2. Step 2: Convert to fraction form
    78,082.07/117,143.15 = 21,922.34/x
  3. Step 3: Cross multiply
    78,082.07x = 117,143.15 × 21,922.34
  4. Step 4: Simplify right side
    78,082.07x = 2,568,051,267.64
  5. Step 5: Solve for x
    x = 2,568,051,267.64/78,082.07
  6. Step 6: Final answer
    x = 32,889.13

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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.