Home / 78,638.16-108,464.94-76,034.46

Finding the Fourth Proportional to 78,638.16, 108,464.94 and 76,034.46

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Solution

The fourth proportional to 78,638.16, 108,464.94 and 76,034.46 is: 104,873.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,638.16 : 108,464.94 = 76,034.46 : x
  2. Step 2: Convert to fraction form
    78,638.16/108,464.94 = 76,034.46/x
  3. Step 3: Cross multiply
    78,638.16x = 108,464.94 × 76,034.46
  4. Step 4: Simplify right side
    78,638.16x = 8,247,073,141.83
  5. Step 5: Solve for x
    x = 8,247,073,141.83/78,638.16
  6. Step 6: Final answer
    x = 104,873.68

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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.