Home / 258,026.40-387,057.87-68,485.23

Finding the Fourth Proportional to 258,026.40, 387,057.87 and 68,485.23

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Solution

The fourth proportional to 258,026.40, 387,057.87 and 68,485.23 is: 102,732.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,026.40 : 387,057.87 = 68,485.23 : x
  2. Step 2: Convert to fraction form
    258,026.40/387,057.87 = 68,485.23/x
  3. Step 3: Cross multiply
    258,026.40x = 387,057.87 × 68,485.23
  4. Step 4: Simplify right side
    258,026.40x = 26,507,747,250.26
  5. Step 5: Solve for x
    x = 26,507,747,250.26/258,026.40
  6. Step 6: Final answer
    x = 102,732.69

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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.