Home / 68,485.78-102,587.16-40,319.06

Finding the Fourth Proportional to 68,485.78, 102,587.16 and 40,319.06

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Solution

The fourth proportional to 68,485.78, 102,587.16 and 40,319.06 is: 60,395.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,485.78 : 102,587.16 = 40,319.06 : x
  2. Step 2: Convert to fraction form
    68,485.78/102,587.16 = 40,319.06/x
  3. Step 3: Cross multiply
    68,485.78x = 102,587.16 × 40,319.06
  4. Step 4: Simplify right side
    68,485.78x = 4,136,217,859.27
  5. Step 5: Solve for x
    x = 4,136,217,859.27/68,485.78
  6. Step 6: Final answer
    x = 60,395.28

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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.