Home / 47,639.54-65,691.41-40,168.20

Finding the Fourth Proportional to 47,639.54, 65,691.41 and 40,168.20

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Solution

The fourth proportional to 47,639.54, 65,691.41 and 40,168.20 is: 55,388.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,639.54 : 65,691.41 = 40,168.20 : x
  2. Step 2: Convert to fraction form
    47,639.54/65,691.41 = 40,168.20/x
  3. Step 3: Cross multiply
    47,639.54x = 65,691.41 × 40,168.20
  4. Step 4: Simplify right side
    47,639.54x = 2,638,705,740.66
  5. Step 5: Solve for x
    x = 2,638,705,740.66/47,639.54
  6. Step 6: Final answer
    x = 55,388.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.