Home / 74,938.35-112,404.87-18,778.92

Finding the Fourth Proportional to 74,938.35, 112,404.87 and 18,778.92

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Solution

The fourth proportional to 74,938.35, 112,404.87 and 18,778.92 is: 28,167.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,938.35 : 112,404.87 = 18,778.92 : x
  2. Step 2: Convert to fraction form
    74,938.35/112,404.87 = 18,778.92/x
  3. Step 3: Cross multiply
    74,938.35x = 112,404.87 × 18,778.92
  4. Step 4: Simplify right side
    74,938.35x = 2,110,842,061.34
  5. Step 5: Solve for x
    x = 2,110,842,061.34/74,938.35
  6. Step 6: Final answer
    x = 28,167.71

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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.