Home / 258,391.24-387,586.38-68,851.72

Finding the Fourth Proportional to 258,391.24, 387,586.38 and 68,851.72

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Solution

The fourth proportional to 258,391.24, 387,586.38 and 68,851.72 is: 103,277.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,391.24 : 387,586.38 = 68,851.72 : x
  2. Step 2: Convert to fraction form
    258,391.24/387,586.38 = 68,851.72/x
  3. Step 3: Cross multiply
    258,391.24x = 387,586.38 × 68,851.72
  4. Step 4: Simplify right side
    258,391.24x = 26,685,988,911.57
  5. Step 5: Solve for x
    x = 26,685,988,911.57/258,391.24
  6. Step 6: Final answer
    x = 103,277.45

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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.