Home / 74,938.13-112,404.60-18,778.73

Finding the Fourth Proportional to 74,938.13, 112,404.60 and 18,778.73

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Solution

The fourth proportional to 74,938.13, 112,404.60 and 18,778.73 is: 28,167.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,938.13 : 112,404.60 = 18,778.73 : x
  2. Step 2: Convert to fraction form
    74,938.13/112,404.60 = 18,778.73/x
  3. Step 3: Cross multiply
    74,938.13x = 112,404.60 × 18,778.73
  4. Step 4: Simplify right side
    74,938.13x = 2,110,815,634.16
  5. Step 5: Solve for x
    x = 2,110,815,634.16/74,938.13
  6. Step 6: Final answer
    x = 28,167.44

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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.