Home / 40,172.78-60,258.86-12,092.72

Finding the Fourth Proportional to 40,172.78, 60,258.86 and 12,092.72

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Solution

The fourth proportional to 40,172.78, 60,258.86 and 12,092.72 is: 18,138.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,172.78 : 60,258.86 = 12,092.72 : x
  2. Step 2: Convert to fraction form
    40,172.78/60,258.86 = 12,092.72/x
  3. Step 3: Cross multiply
    40,172.78x = 60,258.86 × 12,092.72
  4. Step 4: Simplify right side
    40,172.78x = 728,693,159.74
  5. Step 5: Solve for x
    x = 728,693,159.74/40,172.78
  6. Step 6: Final answer
    x = 18,138.98

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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.