Home / 78,729.07-108,613.40-46,450.87

Finding the Fourth Proportional to 78,729.07, 108,613.40 and 46,450.87

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Solution

The fourth proportional to 78,729.07, 108,613.40 and 46,450.87 is: 64,082.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,729.07 : 108,613.40 = 46,450.87 : x
  2. Step 2: Convert to fraction form
    78,729.07/108,613.40 = 46,450.87/x
  3. Step 3: Cross multiply
    78,729.07x = 108,613.40 × 46,450.87
  4. Step 4: Simplify right side
    78,729.07x = 5,045,187,001.36
  5. Step 5: Solve for x
    x = 5,045,187,001.36/78,729.07
  6. Step 6: Final answer
    x = 64,082.90

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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.