Home / 68,438.07-102,657.35-21,052.85

Finding the Fourth Proportional to 68,438.07, 102,657.35 and 21,052.85

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Solution

The fourth proportional to 68,438.07, 102,657.35 and 21,052.85 is: 31,579.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,438.07 : 102,657.35 = 21,052.85 : x
  2. Step 2: Convert to fraction form
    68,438.07/102,657.35 = 21,052.85/x
  3. Step 3: Cross multiply
    68,438.07x = 102,657.35 × 21,052.85
  4. Step 4: Simplify right side
    68,438.07x = 2,161,229,330.29
  5. Step 5: Solve for x
    x = 2,161,229,330.29/68,438.07
  6. Step 6: Final answer
    x = 31,579.34

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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.