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Finding the Fourth Proportional to 79,277.50, 118,916.16 and 20,113.03

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Solution

The fourth proportional to 79,277.50, 118,916.16 and 20,113.03 is: 30,169.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,277.50 : 118,916.16 = 20,113.03 : x
  2. Step 2: Convert to fraction form
    79,277.50/118,916.16 = 20,113.03/x
  3. Step 3: Cross multiply
    79,277.50x = 118,916.16 × 20,113.03
  4. Step 4: Simplify right side
    79,277.50x = 2,391,764,293.56
  5. Step 5: Solve for x
    x = 2,391,764,293.56/79,277.50
  6. Step 6: Final answer
    x = 30,169.52

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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.