Home / 68,781.12-103,640.37-56,574.60

Finding the Fourth Proportional to 68,781.12, 103,640.37 and 56,574.60

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Solution

The fourth proportional to 68,781.12, 103,640.37 and 56,574.60 is: 85,247.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,781.12 : 103,640.37 = 56,574.60 : x
  2. Step 2: Convert to fraction form
    68,781.12/103,640.37 = 56,574.60/x
  3. Step 3: Cross multiply
    68,781.12x = 103,640.37 × 56,574.60
  4. Step 4: Simplify right side
    68,781.12x = 5,863,412,476.60
  5. Step 5: Solve for x
    x = 5,863,412,476.60/68,781.12
  6. Step 6: Final answer
    x = 85,247.41

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.