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Finding the Fourth Proportional to 79,314.57, 118,975.10 and 20,151.77

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Solution

The fourth proportional to 79,314.57, 118,975.10 and 20,151.77 is: 30,228.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,314.57 : 118,975.10 = 20,151.77 : x
  2. Step 2: Convert to fraction form
    79,314.57/118,975.10 = 20,151.77/x
  3. Step 3: Cross multiply
    79,314.57x = 118,975.10 × 20,151.77
  4. Step 4: Simplify right side
    79,314.57x = 2,397,558,155.29
  5. Step 5: Solve for x
    x = 2,397,558,155.29/79,314.57
  6. Step 6: Final answer
    x = 30,228.47

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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.