Home / 74,940.13-112,407.60-18,780.73

Finding the Fourth Proportional to 74,940.13, 112,407.60 and 18,780.73

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Solution

The fourth proportional to 74,940.13, 112,407.60 and 18,780.73 is: 28,170.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,940.13 : 112,407.60 = 18,780.73 : x
  2. Step 2: Convert to fraction form
    74,940.13/112,407.60 = 18,780.73/x
  3. Step 3: Cross multiply
    74,940.13x = 112,407.60 × 18,780.73
  4. Step 4: Simplify right side
    74,940.13x = 2,111,096,785.55
  5. Step 5: Solve for x
    x = 2,111,096,785.55/74,940.13
  6. Step 6: Final answer
    x = 28,170.44

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1.5x scale

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.